2011-01-27 00:55:53 +02:00
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@chapter Muxers
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@c man begin MUXERS
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2011-03-17 17:55:58 +02:00
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Muxers are configured elements in FFmpeg which allow writing
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multimedia streams to a particular type of file.
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2011-03-17 17:55:58 +02:00
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When you configure your FFmpeg build, all the supported muxers
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are enabled by default. You can list all available muxers using the
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configure option @code{--list-muxers}.
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You can disable all the muxers with the configure option
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@code{--disable-muxers} and selectively enable / disable single muxers
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with the options @code{--enable-muxer=@var{MUXER}} /
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@code{--disable-muxer=@var{MUXER}}.
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2017-02-10 13:40:14 +02:00
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The option @code{-muxers} of the ff* tools will display the list of
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enabled muxers. Use @code{-formats} to view a combined list of
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enabled demuxers and muxers.
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2011-01-27 00:55:53 +02:00
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A description of some of the currently available muxers follows.
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2024-01-06 20:07:36 +02:00
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@anchor{raw muxers}
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@section Raw muxers
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This section covers raw muxers. They accept a single stream matching
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the designated codec. They do not store timestamps or metadata. The
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recognized extension is the same as the muxer name unless indicated
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otherwise.
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It comprises the following muxers. The media type and the eventual
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extensions used to automatically selects the muxer from the output
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extensions are also shown.
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@table @samp
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@item ac3 @emph{audio}
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Dolby Digital, also known as AC-3.
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@item adx @emph{audio}
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CRI Middleware ADX audio.
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This muxer will write out the total sample count near the start of the
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first packet when the output is seekable and the count can be stored
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in 32 bits.
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@item aptx @emph{audio}
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aptX (Audio Processing Technology for Bluetooth)
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@item aptx_hd @emph{audio} (aptxdh)
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aptX HD (Audio Processing Technology for Bluetooth) audio
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@item avs2 @emph{video} (avs, avs2)
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AVS2-P2 (Audio Video Standard - Second generation - Part 2) /
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IEEE 1857.4 video
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@item avs3 @emph{video} (avs3)
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AVS3-P2 (Audio Video Standard - Third generation - Part 2) /
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IEEE 1857.10 video
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@item cavsvideo @emph{video} (cavs)
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Chinese AVS (Audio Video Standard - First generation)
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@item codec2raw @emph{audio}
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Codec 2 audio.
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No extension is registered so format name has to be supplied e.g. with
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the ffmpeg CLI tool @code{-f codec2raw}.
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@item data @emph{any}
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Generic data muxer.
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This muxer accepts a single stream with any codec of any type. The
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input stream has to be selected using the @code{-map} option with the
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@command{ffmpeg} CLI tool.
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No extension is registered so format name has to be supplied e.g. with
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the @command{ffmpeg} CLI tool @code{-f data}.
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2024-01-20 16:19:59 +02:00
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@item dfpwm @emph{audio} (dfpwm)
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Raw DFPWM1a (Dynamic Filter Pulse With Modulation) audio muxer.
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2024-01-06 20:07:36 +02:00
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@item dirac @emph{video} (drc, vc2)
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BBC Dirac video.
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The Dirac Pro codec is a subset and is standardized as SMPTE VC-2.
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@item dnxhd @emph{video} (dnxhd, dnxhr)
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Avid DNxHD video.
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It is standardized as SMPTE VC-3. Accepts DNxHR streams.
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@item dts @emph{audio}
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DTS Coherent Acoustics (DCA) audio
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2024-01-20 16:20:49 +02:00
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@item eac3 @emph{audio}
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Dolby Digital Plus, also known as Enhanced AC-3
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@item evc @emph{video} (evc)
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MPEG-5 Essential Video Coding (EVC) / EVC / MPEG-5 Part 1 EVC video
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@item g722 @emph{audio}
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ITU-T G.722 audio
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@item g723_1 @emph{audio} (tco, rco)
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ITU-T G.723.1 audio
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@item g726 @emph{audio}
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ITU-T G.726 big-endian ("left-justified") audio.
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No extension is registered so format name has to be supplied e.g. with
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the @command{ffmpeg} CLI tool @code{-f g726}.
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@item g726le @emph{audio}
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ITU-T G.726 little-endian ("right-justified") audio.
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No extension is registered so format name has to be supplied e.g. with
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the @command{ffmpeg} CLI tool @code{-f g726le}.
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@item gsm @emph{audio}
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Global System for Mobile Communications audio
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@item h261 @emph{video}
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ITU-T H.261 video
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@item h263 @emph{video}
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ITU-T H.263 / H.263-1996, H.263+ / H.263-1998 / H.263 version 2 video
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@item h264 @emph{video} (h264, 264)
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ITU-T H.264 / MPEG-4 Part 10 AVC video. Bitstream shall be converted
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to Annex B syntax if it's in length-prefixed mode.
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@item hevc @emph{video} (hevc, h265, 265)
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ITU-T H.265 / MPEG-H Part 2 HEVC video. Bitstream shall be converted
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to Annex B syntax if it's in length-prefixed mode.
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@item m4v @emph{video}
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MPEG-4 Part 2 video
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@item mjpeg @emph{video} (mjpg, mjpeg)
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Motion JPEG video
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@item mlp @emph{audio}
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Meridian Lossless Packing, also known as Packed PCM
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@item mp2 @emph{audio} (mp2, m2a, mpa)
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MPEG-1 Audio Layer II audio
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@item mpeg1video @emph{video} (mpg, mpeg, m1v)
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MPEG-1 Part 2 video.
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@item mpeg2video @emph{video} (m2v)
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ITU-T H.262 / MPEG-2 Part 2 video
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@item obu @emph{video}
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AV1 low overhead Open Bitstream Units muxer.
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Temporal delimiter OBUs will be inserted in all temporal units of the
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stream.
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@item rawvideo @emph{video} (yuv, rgb)
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Raw uncompressed video.
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@item sbc @emph{audio} (sbc, msbc)
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Bluetooth SIG low-complexity subband codec audio
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@item truehd @emph{audio} (thd)
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Dolby TrueHD audio
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@item vc1 @emph{video}
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SMPTE 421M / VC-1 video
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@end table
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@subsection Examples
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@itemize
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@item
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Store raw video frames with the @samp{rawvideo} muxer using @command{ffmpeg}:
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@example
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ffmpeg -f lavfi -i testsrc -t 10 -s hd1080p testsrc.yuv
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@end example
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Since the rawvideo muxer do not store the information related to size
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and format, this information must be provided when demuxing the file:
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@example
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ffplay -video_size 1920x1080 -pixel_format rgb24 -f rawvideo testsrc.rgb
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@end example
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@end itemize
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2024-01-14 16:29:53 +02:00
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@section Raw PCM muxers
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2024-01-06 20:52:22 +02:00
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This section covers raw PCM (Pulse-Code Modulation) audio muxers.
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They accept a single stream matching the designated codec. They do not
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store timestamps or metadata. The recognized extension is the same as
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the muxer name.
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It comprises the following muxers. The optional additional extension
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used to automatically select the muxer from the output extension is
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also shown in parentheses.
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@table @samp
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@item alaw (al)
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PCM A-law
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@item f32be
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PCM 32-bit floating-point big-endian
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@item f32le
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PCM 32-bit floating-point little-endian
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@item f64be
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PCM 64-bit floating-point big-endian
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@item f64le
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PCM 64-bit floating-point little-endian
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@item mulaw (ul)
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PCM mu-law
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@item s16be
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PCM signed 16-bit big-endian
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@item s16le
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PCM signed 16-bit little-endian
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@item s24be
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PCM signed 24-bit big-endian
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@item s24le
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PCM signed 24-bit little-endian
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@item s32be
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PCM signed 32-bit big-endian
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@item s32le
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PCM signed 32-bit little-endian
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@item s8 (sb)
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PCM signed 8-bit
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@item u16be
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PCM unsigned 16-bit big-endian
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@item u16le
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PCM unsigned 16-bit little-endian
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@item u24be
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PCM unsigned 24-bit big-endian
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@item u24le
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PCM unsigned 24-bit little-endian
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@item u32be
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PCM unsigned 32-bit big-endian
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@item u32le
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PCM unsigned 32-bit little-endian
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@item u8 (ub)
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PCM unsigned 8-bit
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@item vidc
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PCM Archimedes VIDC
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@end table
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2024-01-20 19:07:02 +02:00
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@section MPEG-1/MPEG-2 program stream muxers
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This section covers formats belonging to the MPEG-1 and MPEG-2 Systems
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family.
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The MPEG-1 Systems format (also known as ISO/IEEC 11172-1 or MPEG-1
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program stream) has been adopted for the format of media track stored
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in VCD (Video Compact Disc).
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The MPEG-2 Systems standard (also known as ISO/IEEC 13818-1) covers
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two containers formats, one known as transport stream and one known as
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program stream; only the latter is covered here.
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The MPEG-2 program stream format (also known as VOB due to the
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corresponding file extension) is an extension of MPEG-1 program
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stream: in addition to support different codecs for the audio and
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video streams, it also stores subtitles and navigation metadata.
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MPEG-2 program stream has been adopted for storing media streams in
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SVCD and DVD storage devices.
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This section comprises the following muxers.
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@table @samp
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@item mpeg (mpg,mpeg)
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MPEG-1 Systems / MPEG-1 program stream muxer.
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@item vcd
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MPEG-1 Systems / MPEG-1 program stream (VCD) muxer.
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This muxer can be used to generate tracks in the format accepted by
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the VCD (Video Compact Disc) storage devices.
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It is the same as the @samp{mpeg} muxer with a few differences.
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@item vob
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MPEG-2 program stream (VOB) muxer.
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@item dvd
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MPEG-2 program stream (DVD VOB) muxer.
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This muxer can be used to generate tracks in the format accepted by
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the DVD (Digital Versatile Disc) storage devices.
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This is the same as the @samp{vob} muxer with a few differences.
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@item svcd (vob)
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MPEG-2 program stream (SVCD VOB) muxer.
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This muxer can be used to generate tracks in the format accepted by
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the SVCD (Super Video Compact Disc) storage devices.
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This is the same as the @samp{vob} muxer with a few differences.
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@end table
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@subsection Options
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@table @option
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@item muxrate @var{rate}
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Set user-defined mux rate expressed as a number of bits/s. If not
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specied the automatically computed mux rate is employed. Default value
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is @code{0}.
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@item preload @var{delay}
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Set initial demux-decode delay in microseconds. Default value is
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@code{500000}.
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@end table
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2024-01-06 18:45:35 +02:00
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@section MOV/MPEG-4/ISOMBFF muxers
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This section covers formats belonging to the QuickTime / MOV family,
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including the MPEG-4 Part 14 format and ISO base media file format
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(ISOBMFF). These formats share a common structure based on the ISO
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base media file format (ISOBMFF).
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The MOV format was originally developed for use with Apple QuickTime.
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It was later used as the basis for the MPEG-4 Part 1 (later Part 14)
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format, also known as ISO/IEC 14496-1. That format was then
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generalized into ISOBMFF, also named MPEG-4 Part 12 format, ISO/IEC
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14496-12, or ISO/IEC 15444-12.
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It comprises the following muxers.
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@table @samp
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@item 3gp
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Third Generation Partnership Project (3GPP) format for 3G UMTS
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multimedia services
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@item 3g2
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Third Generation Partnership Project 2 (3GP2 or 3GPP2) format for 3G
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CDMA2000 multimedia services, similar to @samp{3gp} with extensions
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and limitations
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@item f4v
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Adobe Flash Video format
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@item ipod
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MPEG-4 audio file format, as MOV/MP4 but limited to contain only audio
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streams, typically played with the Apple ipod device
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@item ismv
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Microsoft IIS (Internet Information Services) Smooth Streaming
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Audio/Video (ISMV or ISMA) format. This is based on MPEG-4 Part 14
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format with a few incompatible variants, used to stream media files
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for the Microsoft IIS server.
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@item mov
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QuickTime player format identified by the @code{.mov} extension
|
|
|
|
|
|
|
|
@item mp4
|
|
|
|
MP4 or MPEG-4 Part 14 format
|
|
|
|
|
|
|
|
@item psp
|
|
|
|
PlayStation Portable MP4/MPEG-4 Part 14 format variant. This is based
|
|
|
|
on MPEG-4 Part 14 format with a few incompatible variants, used to
|
|
|
|
play files on PlayStation devices.
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@subsection Fragmentation
|
|
|
|
|
|
|
|
The @samp{mov}, @samp{mp4}, and @samp{ismv} muxers support
|
|
|
|
fragmentation. Normally, a MOV/MP4 file has all the metadata about all
|
|
|
|
packets stored in one location.
|
|
|
|
|
|
|
|
This data is usually written at the end of the file, but it can be
|
|
|
|
moved to the start for better playback by adding @code{+faststart} to
|
|
|
|
the @code{-movflags}, or using the @command{qt-faststart} tool).
|
|
|
|
|
|
|
|
A fragmented file consists of a number of fragments, where packets and
|
|
|
|
metadata about these packets are stored together. Writing a fragmented
|
|
|
|
file has the advantage that the file is decodable even if the writing
|
|
|
|
is interrupted (while a normal MOV/MP4 is undecodable if it is not
|
|
|
|
properly finished), and it requires less memory when writing very long
|
|
|
|
files (since writing normal MOV/MP4 files stores info about every
|
|
|
|
single packet in memory until the file is closed). The downside is
|
|
|
|
that it is less compatible with other applications.
|
|
|
|
|
|
|
|
Fragmentation is enabled by setting one of the options that define
|
|
|
|
how to cut the file into fragments:
|
|
|
|
@table @option
|
|
|
|
@item frag_duration
|
|
|
|
@item frag_size
|
|
|
|
@item min_frag_duration
|
|
|
|
@item movflags +frag_keyframe
|
|
|
|
@item movflags +frag_custom
|
|
|
|
@end table
|
|
|
|
|
|
|
|
If more than one condition is specified, fragments are cut when one of
|
|
|
|
the specified conditions is fulfilled. The exception to this is the
|
|
|
|
option @option{min_frag_duration}, which has to be fulfilled for any
|
|
|
|
of the other conditions to apply.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
|
|
|
|
@table @option
|
|
|
|
|
|
|
|
@item brand @var{brand_string}
|
|
|
|
Override major brand.
|
|
|
|
|
|
|
|
@item empty_hdlr_name @var{bool}
|
|
|
|
Enable to skip writing the name inside a @code{hdlr} box.
|
|
|
|
Default is @code{false}.
|
|
|
|
|
|
|
|
@item encryption_key @var{key}
|
|
|
|
set the media encryption key in hexadecimal format
|
|
|
|
|
|
|
|
@item encryption_kid @var{kid}
|
|
|
|
set the media encryption key identifier in hexadecimal format
|
|
|
|
|
|
|
|
@item encryption_scheme @var{scheme}
|
|
|
|
configure the encryption scheme, allowed values are @samp{none}, and
|
|
|
|
@samp{cenc-aes-ctr}
|
|
|
|
|
|
|
|
@item frag_duration @var{duration}
|
|
|
|
Create fragments that are @var{duration} microseconds long.
|
|
|
|
|
|
|
|
@item frag_interleave @var{number}
|
|
|
|
Interleave samples within fragments (max number of consecutive
|
|
|
|
samples, lower is tighter interleaving, but with more overhead. It is
|
|
|
|
set to @code{0} by default.
|
|
|
|
|
|
|
|
@item frag_size @var{size}
|
|
|
|
create fragments that contain up to @var{size} bytes of payload data
|
|
|
|
|
|
|
|
@item iods_audio_profile @var{profile}
|
|
|
|
specify iods number for the audio profile atom (from -1 to 255),
|
|
|
|
default is @code{-1}
|
|
|
|
|
|
|
|
@item iods_video_profile @var{profile}
|
|
|
|
specify iods number for the video profile atom (from -1 to 255),
|
|
|
|
default is @code{-1}
|
|
|
|
|
|
|
|
@item ism_lookahead @var{num_entries}
|
|
|
|
specify number of lookahead entries for ISM files (from 0 to 255),
|
|
|
|
default is @code{0}
|
|
|
|
|
|
|
|
@item min_frag_duration @var{duration}
|
|
|
|
do not create fragments that are shorter than @var{duration} microseconds long
|
|
|
|
|
|
|
|
@item moov_size @var{bytes}
|
|
|
|
Reserves space for the moov atom at the beginning of the file instead of placing the
|
|
|
|
moov atom at the end. If the space reserved is insufficient, muxing will fail.
|
|
|
|
|
|
|
|
@item mov_gamma @var{gamma}
|
|
|
|
specify gamma value for gama atom (as a decimal number from 0 to 10),
|
|
|
|
default is @code{0.0}, must be set together with @code{+ movflags}
|
|
|
|
|
|
|
|
@item movflags @var{flags}
|
|
|
|
Set various muxing switches. The following flags can be used:
|
|
|
|
@table @samp
|
|
|
|
@item cmaf
|
|
|
|
write CMAF (Common Media Application Format) compatible fragmented
|
|
|
|
MP4 output
|
|
|
|
|
|
|
|
@item dash
|
|
|
|
write DASH (Dynamic Adaptive Streaming over HTTP) compatible fragmented
|
|
|
|
MP4 output
|
|
|
|
|
|
|
|
@item default_base_moof
|
|
|
|
Similarly to the @samp{omit_tfhd_offset} flag, this flag avoids
|
|
|
|
writing the absolute base_data_offset field in tfhd atoms, but does so
|
|
|
|
by using the new default-base-is-moof flag instead. This flag is new
|
|
|
|
from 14496-12:2012. This may make the fragments easier to parse in
|
|
|
|
certain circumstances (avoiding basing track fragment location
|
|
|
|
calculations on the implicit end of the previous track fragment).
|
|
|
|
|
|
|
|
@item delay_moov
|
|
|
|
delay writing the initial moov until the first fragment is cut, or
|
|
|
|
until the first fragment flush
|
|
|
|
|
|
|
|
@item disable_chpl
|
|
|
|
Disable Nero chapter markers (chpl atom). Normally, both Nero chapters
|
|
|
|
and a QuickTime chapter track are written to the file. With this
|
|
|
|
option set, only the QuickTime chapter track will be written. Nero
|
|
|
|
chapters can cause failures when the file is reprocessed with certain
|
|
|
|
tagging programs, like mp3Tag 2.61a and iTunes 11.3, most likely other
|
|
|
|
versions are affected as well.
|
|
|
|
|
|
|
|
@item faststart
|
|
|
|
Run a second pass moving the index (moov atom) to the beginning of the
|
|
|
|
file. This operation can take a while, and will not work in various
|
|
|
|
situations such as fragmented output, thus it is not enabled by
|
|
|
|
default.
|
|
|
|
|
|
|
|
@item frag_custom
|
|
|
|
Allow the caller to manually choose when to cut fragments, by calling
|
|
|
|
@code{av_write_frame(ctx, NULL)} to write a fragment with the packets
|
|
|
|
written so far. (This is only useful with other applications
|
|
|
|
integrating libavformat, not from @command{ffmpeg}.)
|
|
|
|
|
|
|
|
@item frag_discont
|
|
|
|
signal that the next fragment is discontinuous from earlier ones
|
|
|
|
|
|
|
|
@item frag_every_frame
|
|
|
|
fragment at every frame
|
|
|
|
|
|
|
|
@item frag_keyframe
|
|
|
|
start a new fragment at each video keyframe
|
|
|
|
|
|
|
|
@item global_sidx
|
|
|
|
write a global sidx index at the start of the file
|
|
|
|
|
|
|
|
@item isml
|
|
|
|
create a live smooth streaming feed (for pushing to a publishing point)
|
|
|
|
|
|
|
|
@item negative_cts_offsets
|
|
|
|
Enables utilization of version 1 of the CTTS box, in which the CTS offsets can
|
|
|
|
be negative. This enables the initial sample to have DTS/CTS of zero, and
|
|
|
|
reduces the need for edit lists for some cases such as video tracks with
|
|
|
|
B-frames. Additionally, eases conformance with the DASH-IF interoperability
|
|
|
|
guidelines.
|
|
|
|
|
|
|
|
This option is implicitly set when writing @samp{ismv} (Smooth
|
|
|
|
Streaming) files.
|
|
|
|
|
|
|
|
@item omit_tfhd_offset
|
|
|
|
Do not write any absolute base_data_offset in tfhd atoms. This avoids
|
|
|
|
tying fragments to absolute byte positions in the file/streams.
|
|
|
|
|
|
|
|
@item prefer_icc
|
|
|
|
If writing colr atom prioritise usage of ICC profile if it exists in
|
|
|
|
stream packet side data.
|
|
|
|
|
|
|
|
@item rtphint
|
|
|
|
add RTP hinting tracks to the output file
|
|
|
|
|
|
|
|
@item separate_moof
|
|
|
|
Write a separate moof (movie fragment) atom for each track. Normally,
|
|
|
|
packets for all tracks are written in a moof atom (which is slightly
|
|
|
|
more efficient), but with this option set, the muxer writes one
|
|
|
|
moof/mdat pair for each track, making it easier to separate tracks.
|
|
|
|
|
|
|
|
@item skip_sidx
|
|
|
|
Skip writing of sidx atom. When bitrate overhead due to sidx atom is
|
|
|
|
high, this option could be used for cases where sidx atom is not
|
|
|
|
mandatory. When the @samp{global_sidx} flag is enabled, this option
|
|
|
|
is ignored.
|
|
|
|
|
|
|
|
@item skip_trailer
|
|
|
|
skip writing the mfra/tfra/mfro trailer for fragmented files
|
|
|
|
|
|
|
|
@item use_metadata_tags
|
|
|
|
use mdta atom for metadata
|
|
|
|
|
|
|
|
@item write_colr
|
|
|
|
write colr atom even if the color info is unspecified. This flag is
|
|
|
|
experimental, may be renamed or changed, do not use from scripts.
|
|
|
|
|
|
|
|
@item write_gama
|
|
|
|
write deprecated gama atom
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@item movie_timescale @var{scale}
|
|
|
|
Set the timescale written in the movie header box (@code{mvhd}).
|
|
|
|
Range is 1 to INT_MAX. Default is @code{1000}.
|
|
|
|
|
|
|
|
@item rtpflags @var{flags}
|
|
|
|
Add RTP hinting tracks to the output file.
|
|
|
|
|
|
|
|
The following flags can be used:
|
|
|
|
@table @samp
|
|
|
|
@item h264_mode0
|
|
|
|
use mode 0 for H.264 in RTP
|
|
|
|
|
|
|
|
@item latm
|
|
|
|
use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
|
|
|
|
|
|
|
|
@item rfc2190
|
|
|
|
use RFC 2190 packetization instead of RFC 4629 for H.263
|
|
|
|
|
|
|
|
@item send_bye
|
|
|
|
send RTCP BYE packets when finishing
|
|
|
|
|
|
|
|
@item skip_rtcp
|
|
|
|
do not send RTCP sender reports
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@item skip_iods @var{bool}
|
|
|
|
skip writing iods atom (default value is @code{true})
|
|
|
|
|
|
|
|
@item use_editlist @var{bool}
|
|
|
|
use edit list (default value is @code{auto})
|
|
|
|
|
2024-01-20 14:03:40 +02:00
|
|
|
@item use_stream_ids_as_track_ids @var{bool}
|
2024-01-06 18:45:35 +02:00
|
|
|
use stream ids as track ids (default value is @code{false})
|
|
|
|
|
|
|
|
@item video_track_timescale @var{scale}
|
|
|
|
Set the timescale used for video tracks. Range is @code{0} to INT_MAX. If
|
|
|
|
set to @code{0}, the timescale is automatically set based on the
|
|
|
|
native stream time base. Default is @code{0}.
|
|
|
|
|
|
|
|
@item write_btrt @var{bool}
|
|
|
|
Force or disable writing bitrate box inside stsd box of a track. The
|
|
|
|
box contains decoding buffer size (in bytes), maximum bitrate and
|
|
|
|
average bitrate for the track. The box will be skipped if none of
|
|
|
|
these values can be computed. Default is @code{-1} or @code{auto},
|
|
|
|
which will write the box only in MP4 mode.
|
|
|
|
|
|
|
|
@item write_prft @var{option}
|
|
|
|
Write producer time reference box (PRFT) with a specified time source for the
|
|
|
|
NTP field in the PRFT box. Set value as @samp{wallclock} to specify timesource
|
|
|
|
as wallclock time and @samp{pts} to specify timesource as input packets' PTS
|
|
|
|
values.
|
|
|
|
|
|
|
|
@item write_tmcd @var{bool}
|
|
|
|
Specify @code{on} to force writing a timecode track, @code{off} to disable it
|
|
|
|
and @code{auto} to write a timecode track only for mov and mp4 output (default).
|
|
|
|
|
|
|
|
Setting value to @samp{pts} is applicable only for a live encoding use case,
|
|
|
|
where PTS values are set as as wallclock time at the source. For example, an
|
|
|
|
encoding use case with decklink capture source where @option{video_pts} and
|
|
|
|
@option{audio_pts} are set to @samp{abs_wallclock}.
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@subsection Examples
|
|
|
|
|
|
|
|
@itemize
|
|
|
|
@item
|
|
|
|
Push Smooth Streaming content in real time to a publishing point on
|
|
|
|
IIS with the @samp{ismv} muxer using @command{ffmpeg}:
|
|
|
|
@example
|
|
|
|
ffmpeg -re @var{<normal input/transcoding options>} -movflags isml+frag_keyframe -f ismv http://server/publishingpoint.isml/Streams(Encoder1)
|
|
|
|
@end example
|
|
|
|
@end itemize
|
|
|
|
|
2021-04-02 08:34:56 +02:00
|
|
|
@anchor{a64}
|
|
|
|
@section a64
|
2024-01-06 20:16:57 +02:00
|
|
|
A64 Commodore 64 video muxer.
|
2021-04-02 08:34:56 +02:00
|
|
|
|
2024-01-06 20:16:57 +02:00
|
|
|
This muxer accepts a single @code{a64_multi} or @code{a64_multi5}
|
|
|
|
codec video stream.
|
2021-04-02 08:34:56 +02:00
|
|
|
|
2024-01-06 20:17:18 +02:00
|
|
|
@section ac4
|
|
|
|
Raw AC-4 audio muxer.
|
|
|
|
|
|
|
|
This muxer accepts a single @code{ac4} audio stream.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item write_crc @var{bool}
|
|
|
|
when enabled, write a CRC checksum for each packet to the output,
|
|
|
|
default is @code{false}
|
|
|
|
@end table
|
|
|
|
|
2021-04-26 13:08:19 +02:00
|
|
|
@anchor{adts}
|
|
|
|
@section adts
|
2024-01-06 20:28:55 +02:00
|
|
|
Audio Data Transport Stream muxer.
|
2021-04-26 13:08:19 +02:00
|
|
|
|
2024-01-06 20:28:55 +02:00
|
|
|
It accepts a single AAC stream.
|
2021-04-26 13:08:19 +02:00
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item write_id3v2 @var{bool}
|
2024-01-06 20:28:55 +02:00
|
|
|
Enable to write ID3v2.4 tags at the start of the stream. Default is
|
|
|
|
disabled.
|
2021-04-26 13:08:19 +02:00
|
|
|
|
|
|
|
@item write_apetag @var{bool}
|
2024-01-06 20:28:55 +02:00
|
|
|
Enable to write APE tags at the end of the stream. Default is
|
|
|
|
disabled.
|
2021-04-26 13:08:19 +02:00
|
|
|
|
|
|
|
@item write_mpeg2 @var{bool}
|
2024-01-06 20:28:55 +02:00
|
|
|
Enable to set MPEG version bit in the ADTS frame header to 1 which
|
|
|
|
indicates MPEG-2. Default is 0, which indicates MPEG-4.
|
2021-04-26 13:08:19 +02:00
|
|
|
@end table
|
|
|
|
|
2024-03-08 15:45:02 +02:00
|
|
|
@anchor{aea}
|
|
|
|
@section aea
|
|
|
|
MD STUDIO audio muxer.
|
|
|
|
|
|
|
|
This muxer accepts a single ATRAC1 audio stream with either one or two channels
|
|
|
|
and a sample rate of 44100Hz.
|
|
|
|
|
|
|
|
As AEA supports storing the track title, this muxer will also write
|
|
|
|
the title from stream's metadata to the container.
|
|
|
|
|
2013-07-03 05:32:27 +03:00
|
|
|
@anchor{aiff}
|
|
|
|
@section aiff
|
|
|
|
Audio Interchange File Format muxer.
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
@subsection Options
|
2013-07-03 05:32:27 +03:00
|
|
|
@table @option
|
2024-01-06 20:31:55 +02:00
|
|
|
@item write_id3v2 @var{bool}
|
2013-07-03 05:32:27 +03:00
|
|
|
Enable ID3v2 tags writing when set to 1. Default is 0 (disabled).
|
|
|
|
|
2024-01-06 20:31:55 +02:00
|
|
|
@item id3v2_version @var{bool}
|
2013-07-03 05:32:27 +03:00
|
|
|
Select ID3v2 version to write. Currently only version 3 and 4 (aka.
|
|
|
|
ID3v2.3 and ID3v2.4) are supported. The default is version 4.
|
|
|
|
@end table
|
|
|
|
|
2021-04-26 15:51:47 +02:00
|
|
|
@anchor{alp}
|
|
|
|
@section alp
|
2024-01-06 20:54:28 +02:00
|
|
|
High Voltage Software's Lego Racers game audio muxer.
|
2021-04-26 15:51:47 +02:00
|
|
|
|
2024-01-06 20:54:28 +02:00
|
|
|
It accepts a single ADPCM_IMA_ALP stream with no more than 2 channels
|
|
|
|
and a sample rate not greater than 44100 Hz.
|
2021-04-26 15:51:47 +02:00
|
|
|
|
2024-01-06 20:54:28 +02:00
|
|
|
Extensions: @code{tun}, @code{pcm}
|
2021-04-26 15:51:47 +02:00
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item type @var{type}
|
|
|
|
Set file type.
|
|
|
|
|
2024-01-06 20:54:28 +02:00
|
|
|
@var{type} accepts the following values:
|
2021-04-26 15:51:47 +02:00
|
|
|
@table @samp
|
|
|
|
@item tun
|
|
|
|
Set file type as music. Must have a sample rate of 22050 Hz.
|
|
|
|
|
|
|
|
@item pcm
|
|
|
|
Set file type as sfx.
|
|
|
|
|
|
|
|
@item auto
|
2024-01-06 20:54:28 +02:00
|
|
|
Set file type as per output file extension. @code{.pcm} results in
|
|
|
|
type @code{pcm} else type @code{tun} is set. @var{(default)}
|
2021-04-26 15:51:47 +02:00
|
|
|
@end table
|
|
|
|
@end table
|
|
|
|
|
2024-01-06 21:25:40 +02:00
|
|
|
@section amr
|
|
|
|
3GPP AMR (Adaptive Multi-Rate) audio muxer.
|
|
|
|
|
|
|
|
It accepts a single audio stream containing an AMR NB stream.
|
|
|
|
|
2024-01-06 21:37:47 +02:00
|
|
|
@section amv
|
|
|
|
AMV (Actions Media Video) format muxer.
|
|
|
|
|
2024-01-06 21:40:35 +02:00
|
|
|
@section apm
|
|
|
|
Ubisoft Rayman 2 APM audio muxer.
|
|
|
|
|
|
|
|
It accepts a single ADPCM IMA APM audio stream.
|
|
|
|
|
2024-01-06 22:16:45 +02:00
|
|
|
@section apng
|
|
|
|
Animated Portable Network Graphics muxer.
|
|
|
|
|
|
|
|
It accepts a single APNG video stream.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item final_delay @var{delay}
|
|
|
|
Force a delay expressed in seconds after the last frame of each
|
|
|
|
repetition. Default value is @code{0.0}.
|
|
|
|
|
|
|
|
@item plays @var{repetitions}
|
|
|
|
specify how many times to play the content, @code{0} causes an infinte
|
|
|
|
loop, with @code{1} there is no loop
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@subsection Examples
|
|
|
|
@itemize
|
|
|
|
@item
|
|
|
|
Use @command{ffmpeg} to generate an APNG output with 2 repetitions,
|
|
|
|
and with a delay of half a second after the first repetition:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -final_delay 0.5 -plays 2 out.apng
|
|
|
|
@end example
|
|
|
|
@end itemize
|
|
|
|
|
2024-01-07 17:21:08 +02:00
|
|
|
@section argo_asf
|
|
|
|
Argonaut Games ASF audio muxer.
|
|
|
|
|
|
|
|
It accepts a single ADPCM audio stream.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item version_major @var{version}
|
|
|
|
override file major version, specified as an integer, default value is
|
|
|
|
@code{2}
|
|
|
|
|
|
|
|
@item version_minor @var{version}
|
|
|
|
override file minor version, specified as an integer, default value is
|
|
|
|
@code{1}
|
|
|
|
|
|
|
|
@item name @var{name}
|
|
|
|
Embed file name into file, if not specified use the output file
|
|
|
|
name. The name is truncated to 8 characters.
|
|
|
|
@end table
|
|
|
|
|
2024-01-08 21:00:26 +02:00
|
|
|
@section argo_cvg
|
|
|
|
Argonaut Games CVG audio muxer.
|
|
|
|
|
|
|
|
It accepts a single one-channel ADPCM 22050Hz audio stream.
|
|
|
|
|
|
|
|
The @option{loop} and @option{reverb} options set the corresponding
|
|
|
|
flags in the header which can be later retrieved to process the audio
|
|
|
|
stream accordingly.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item skip_rate_check @var{bool}
|
|
|
|
skip sample rate check (default is @code{false})
|
|
|
|
|
|
|
|
@item loop @var{bool}
|
|
|
|
set loop flag (default is @code{false})
|
|
|
|
|
|
|
|
@item reverb @var{boolean}
|
|
|
|
set reverb flag (default is @code{true})
|
|
|
|
@end table
|
|
|
|
|
2016-02-04 02:30:31 +02:00
|
|
|
@anchor{asf}
|
2024-01-08 21:19:04 +02:00
|
|
|
@section asf, asf_stream
|
|
|
|
Advanced / Active Systems (or Streaming) Format audio muxer.
|
2016-02-04 02:30:31 +02:00
|
|
|
|
2024-01-08 21:19:04 +02:00
|
|
|
The @samp{asf_stream} variant should be selected for streaming.
|
2016-02-04 02:30:31 +02:00
|
|
|
|
|
|
|
Note that Windows Media Audio (wma) and Windows Media Video (wmv) use this
|
|
|
|
muxer too.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
2024-01-08 21:19:04 +02:00
|
|
|
@item packet_size @var{size}
|
|
|
|
Set the muxer packet size as a number of bytes. By tuning this setting
|
|
|
|
you may reduce data fragmentation or muxer overhead depending on your
|
|
|
|
source. Default value is @code{3200}, minimum is @code{100}, maximum
|
|
|
|
is @code{64Ki}.
|
2016-02-04 02:30:31 +02:00
|
|
|
@end table
|
|
|
|
|
2024-01-08 21:45:03 +02:00
|
|
|
@section ass
|
|
|
|
ASS/SSA (SubStation Alpha) subtitles muxer.
|
|
|
|
|
|
|
|
It accepts a single ASS subtitles stream.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item ignore_readorder @var{bool}
|
|
|
|
Write dialogue events immediately, even if they are out-of-order,
|
|
|
|
default is @code{false}, otherwise they are cached until the expected
|
|
|
|
time event is found.
|
|
|
|
@end table
|
|
|
|
|
2024-01-10 22:42:20 +02:00
|
|
|
@section ast
|
|
|
|
AST (Audio Stream) muxer.
|
|
|
|
|
|
|
|
This format is used to play audio on some Nintendo Wii games.
|
|
|
|
|
|
|
|
It accepts a single audio stream.
|
|
|
|
|
|
|
|
The @option{loopstart} and @option{loopend} options can be used to
|
|
|
|
define a section of the file to loop for players honoring such
|
|
|
|
options.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item loopstart @var{start}
|
|
|
|
Specify loop start position expressesd in milliseconds, from @code{-1}
|
|
|
|
to @code{INT_MAX}, in case @code{-1} is set then no loop is specified
|
|
|
|
(default -1) and the @option{loopend} value is ignored.
|
|
|
|
|
|
|
|
@item loopend @var{end}
|
|
|
|
Specify loop end position expressed in milliseconds, from @code{0} to
|
|
|
|
@code{INT_MAX}, default is @code{0}, in case @code{0} is set it
|
|
|
|
assumes the total stream duration.
|
|
|
|
@end table
|
|
|
|
|
2024-01-10 22:47:13 +02:00
|
|
|
@section au
|
|
|
|
SUN AU audio muxer.
|
|
|
|
|
|
|
|
It accepts a single audio stream.
|
|
|
|
|
2017-01-05 12:17:39 +02:00
|
|
|
@anchor{avi}
|
|
|
|
@section avi
|
|
|
|
Audio Video Interleaved muxer.
|
|
|
|
|
2024-01-10 23:34:59 +02:00
|
|
|
AVI is a proprietary format developed by Microsoft, and later formally specified
|
|
|
|
through the Open DML specification.
|
2017-01-05 12:17:39 +02:00
|
|
|
|
2024-01-10 23:34:59 +02:00
|
|
|
Because of differences in players implementations, it might be required to set
|
|
|
|
some options to make sure that the generated output can be correctly played by
|
|
|
|
the target player.
|
2017-01-05 12:17:39 +02:00
|
|
|
|
2024-01-10 23:34:59 +02:00
|
|
|
@subsection Options
|
2017-01-05 12:17:39 +02:00
|
|
|
@table @option
|
2024-01-10 23:34:59 +02:00
|
|
|
@item flipped_raw_rgb @var{bool}
|
|
|
|
If set to @code{true}, store positive height for raw RGB bitmaps, which
|
|
|
|
indicates bitmap is stored bottom-up. Note that this option does not flip the
|
|
|
|
bitmap which has to be done manually beforehand, e.g. by using the @samp{vflip}
|
|
|
|
filter. Default is @code{false} and indicates bitmap is stored top down.
|
|
|
|
|
|
|
|
@item reserve_index_space @var{size}
|
2017-01-05 12:17:39 +02:00
|
|
|
Reserve the specified amount of bytes for the OpenDML master index of each
|
|
|
|
stream within the file header. By default additional master indexes are
|
|
|
|
embedded within the data packets if there is no space left in the first master
|
|
|
|
index and are linked together as a chain of indexes. This index structure can
|
|
|
|
cause problems for some use cases, e.g. third-party software strictly relying
|
|
|
|
on the OpenDML index specification or when file seeking is slow. Reserving
|
|
|
|
enough index space in the file header avoids these problems.
|
|
|
|
|
|
|
|
The required index space depends on the output file size and should be about 16
|
|
|
|
bytes per gigabyte. When this option is omitted or set to zero the necessary
|
|
|
|
index space is guessed.
|
|
|
|
|
2024-01-10 23:34:59 +02:00
|
|
|
Default value is @code{0}.
|
|
|
|
|
|
|
|
@item write_channel_mask @var{bool}
|
2017-01-05 12:17:39 +02:00
|
|
|
Write the channel layout mask into the audio stream header.
|
|
|
|
|
|
|
|
This option is enabled by default. Disabling the channel mask can be useful in
|
|
|
|
specific scenarios, e.g. when merging multiple audio streams into one for
|
|
|
|
compatibility with software that only supports a single audio stream in AVI
|
|
|
|
(see @ref{amerge,,the "amerge" section in the ffmpeg-filters manual,ffmpeg-filters}).
|
|
|
|
@end table
|
|
|
|
|
2024-01-14 17:53:10 +02:00
|
|
|
@section avif
|
|
|
|
AV1 (Alliance for Open Media Video codec 1) image format muxer.
|
|
|
|
|
|
|
|
This muxers stores images encoded using the AV1 codec.
|
|
|
|
|
|
|
|
It accepts one or two video streams. In case two video streams are
|
|
|
|
provided, the second one shall contain a single plane storing the
|
|
|
|
alpha mask.
|
|
|
|
|
|
|
|
In case more than one image is provided, the generated output is
|
|
|
|
considered an animated AVIF and the number of loops can be specified
|
|
|
|
with the @option{loop} option.
|
|
|
|
|
|
|
|
This is based on the specification by Alliance for Open Media at url
|
|
|
|
@url{https://aomediacodec.github.io/av1-avif}.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item loop @var{count}
|
|
|
|
number of times to loop an animated AVIF, @code{0} specify an infinite
|
|
|
|
loop, default is @code{0}
|
|
|
|
|
|
|
|
@item movie_timescale @var{timescale}
|
|
|
|
Set the timescale written in the movie header box (@code{mvhd}).
|
|
|
|
Range is 1 to INT_MAX. Default is @code{1000}.
|
|
|
|
@end table
|
|
|
|
|
2024-01-14 18:05:56 +02:00
|
|
|
@section avm2
|
|
|
|
ShockWave Flash (SWF) / ActionScript Virtual Machine 2 (AVM2) format muxer.
|
|
|
|
|
|
|
|
It accepts one audio stream, one video stream, or both.
|
|
|
|
|
2024-01-14 18:38:27 +02:00
|
|
|
@section bit
|
|
|
|
G.729 (.bit) file format muxer.
|
|
|
|
|
|
|
|
It accepts a single G.729 audio stream.
|
|
|
|
|
2024-01-16 01:17:35 +02:00
|
|
|
@section caf
|
|
|
|
Apple CAF (Core Audio Format) muxer.
|
|
|
|
|
|
|
|
It accepts a single audio stream.
|
|
|
|
|
2024-01-16 01:29:28 +02:00
|
|
|
@section codec2
|
|
|
|
Codec2 audio audio muxer.
|
|
|
|
|
|
|
|
It accepts a single codec2 audio stream.
|
|
|
|
|
2015-10-04 00:24:06 +02:00
|
|
|
@anchor{chromaprint}
|
|
|
|
@section chromaprint
|
2024-01-16 01:41:11 +02:00
|
|
|
Chromaprint fingerprinter muxers.
|
2015-10-04 00:24:06 +02:00
|
|
|
|
2024-01-16 01:41:11 +02:00
|
|
|
To enable compilation of this filter you need to configure FFmpeg with
|
|
|
|
@code{--enable-chromaprint}.
|
2015-10-04 00:24:06 +02:00
|
|
|
|
2024-01-16 01:41:11 +02:00
|
|
|
This muxer feeds audio data to the Chromaprint library, which
|
|
|
|
generates a fingerprint for the provided audio data. See:
|
|
|
|
@url{https://acoustid.org/chromaprint}
|
2018-12-04 13:04:38 +02:00
|
|
|
|
2024-01-16 01:41:11 +02:00
|
|
|
It takes a single signed native-endian 16-bit raw audio stream of at
|
|
|
|
most 2 channels.
|
2015-10-04 00:24:06 +02:00
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
2024-01-16 01:41:11 +02:00
|
|
|
@item algorithm @var{version}
|
|
|
|
Select version of algorithm to fingerprint with. Range is @code{0} to
|
|
|
|
@code{4}. Version @code{3} enables silence detection. Default is @code{1}.
|
2015-10-04 00:24:06 +02:00
|
|
|
|
2024-01-16 01:41:11 +02:00
|
|
|
@item fp_format @var{format}
|
2015-10-04 00:24:06 +02:00
|
|
|
Format to output the fingerprint as. Accepts the following options:
|
|
|
|
@table @samp
|
2024-01-16 01:41:11 +02:00
|
|
|
@item base64
|
|
|
|
Base64 compressed fingerprint @emph{(default)}
|
2015-10-04 00:24:06 +02:00
|
|
|
|
|
|
|
@item compressed
|
|
|
|
Binary compressed fingerprint
|
|
|
|
|
2024-01-16 01:41:11 +02:00
|
|
|
@item raw
|
|
|
|
Binary raw fingerprint
|
2015-10-04 00:24:06 +02:00
|
|
|
@end table
|
|
|
|
|
2024-01-16 01:41:11 +02:00
|
|
|
@item silence_threshold @var{threshold}
|
|
|
|
Threshold for detecting silence. Range is from @code{-1} to
|
|
|
|
@code{32767}, where @code{-1} disables silence detection. Silence
|
|
|
|
detection can only be used with version @code{3} of the algorithm.
|
|
|
|
|
|
|
|
Silence detection must be disabled for use with the AcoustID
|
|
|
|
service. Default is @code{-1}.
|
2015-10-04 00:24:06 +02:00
|
|
|
@end table
|
|
|
|
|
2011-02-01 02:03:48 +02:00
|
|
|
@anchor{crc}
|
2011-01-31 16:20:09 +02:00
|
|
|
@section crc
|
2024-01-16 02:15:19 +02:00
|
|
|
CRC (Cyclic Redundancy Check) muxer.
|
2011-01-31 16:20:09 +02:00
|
|
|
|
|
|
|
This muxer computes and prints the Adler-32 CRC of all the input audio
|
|
|
|
and video frames. By default audio frames are converted to signed
|
|
|
|
16-bit raw audio and video frames to raw video before computing the
|
|
|
|
CRC.
|
|
|
|
|
|
|
|
The output of the muxer consists of a single line of the form:
|
|
|
|
CRC=0x@var{CRC}, where @var{CRC} is a hexadecimal number 0-padded to
|
|
|
|
8 digits containing the CRC for all the decoded input frames.
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
See also the @ref{framecrc} muxer.
|
|
|
|
|
|
|
|
@subsection Examples
|
2024-01-16 02:15:19 +02:00
|
|
|
@itemize
|
|
|
|
@item
|
|
|
|
Use @command{ffmpeg} to compute the CRC of the input, and store it in
|
|
|
|
the file @file{out.crc}:
|
2011-01-31 16:20:09 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f crc out.crc
|
|
|
|
@end example
|
|
|
|
|
2024-01-16 02:15:19 +02:00
|
|
|
@item
|
|
|
|
Use @command{ffmpeg} to print the CRC to stdout with the command:
|
2011-01-31 16:20:09 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f crc -
|
|
|
|
@end example
|
|
|
|
|
2024-01-16 02:15:19 +02:00
|
|
|
@item
|
2011-12-10 03:25:15 +03:00
|
|
|
You can select the output format of each frame with @command{ffmpeg} by
|
2024-01-16 02:15:19 +02:00
|
|
|
specifying the audio and video codec and format. For example, to
|
2011-01-31 16:20:09 +02:00
|
|
|
compute the CRC of the input audio converted to PCM unsigned 8-bit
|
|
|
|
and the input video converted to MPEG-2 video, use the command:
|
|
|
|
@example
|
2011-12-10 03:25:15 +03:00
|
|
|
ffmpeg -i INPUT -c:a pcm_u8 -c:v mpeg2video -f crc -
|
2011-01-31 16:20:09 +02:00
|
|
|
@end example
|
2024-01-16 02:15:19 +02:00
|
|
|
@end itemize
|
2011-01-31 16:20:09 +02:00
|
|
|
|
2017-01-29 16:26:33 +02:00
|
|
|
@anchor{dash}
|
|
|
|
@section dash
|
2024-01-19 01:19:25 +02:00
|
|
|
Dynamic Adaptive Streaming over HTTP (DASH) muxer.
|
2017-01-29 16:26:33 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
This muxer creates segments and manifest files according to the
|
|
|
|
MPEG-DASH standard ISO/IEC 23009-1:2014 and following standard
|
|
|
|
updates.
|
2017-01-29 16:26:33 +02:00
|
|
|
|
|
|
|
For more information see:
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
|
|
ISO DASH Specification: @url{http://standards.iso.org/ittf/PubliclyAvailableStandards/c065274_ISO_IEC_23009-1_2014.zip}
|
|
|
|
@item
|
|
|
|
WebM DASH Specification: @url{https://sites.google.com/a/webmproject.org/wiki/adaptive-streaming/webm-dash-specification}
|
|
|
|
@end itemize
|
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
This muxer creates an MPD (Media Presentation Description) manifest
|
|
|
|
file and segment files for each stream. Segment files are placed in
|
|
|
|
the same directory of the MPD manifest file.
|
|
|
|
|
|
|
|
The segment filename might contain pre-defined identifiers used in the
|
|
|
|
manifest @code{SegmentTemplate} section as defined in section
|
|
|
|
5.3.9.4.4 of the standard.
|
|
|
|
|
|
|
|
Available identifiers are @code{$RepresentationID$}, @code{$Number$},
|
|
|
|
@code{$Bandwidth$}, and @code{$Time$}. In addition to the standard
|
|
|
|
identifiers, an ffmpeg-specific @code{$ext$} identifier is also
|
|
|
|
supported. When specified, @command{ffmpeg} will replace @code{$ext$}
|
|
|
|
in the file name with muxing format's extensions such as @code{mp4},
|
|
|
|
@code{webm} etc.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item adaptation_sets @var{adaptation_sets}
|
|
|
|
Assign streams to adaptation sets, specified in the MPD manifest
|
|
|
|
@code{AdaptationSets} section.
|
2017-01-29 16:26:33 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
An adaptation set contains a set of one or more streams accessed as a
|
|
|
|
single subset, e.g. corresponding streams encoded at different size
|
|
|
|
selectable by the user depending on the available bandwidth, or to
|
|
|
|
different audio streams with a different language.
|
2017-01-29 16:26:33 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
Each adaptation set is specified with the syntax:
|
2017-01-29 16:26:33 +02:00
|
|
|
@example
|
2024-01-19 01:19:25 +02:00
|
|
|
id=@var{index},streams=@var{streams}
|
2017-01-29 16:26:33 +02:00
|
|
|
@end example
|
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
where @var{index} must be a numerical index, and @var{streams} is a
|
|
|
|
sequence of @code{,}-separated stream indices. Multiple adaptation
|
|
|
|
sets can be specified, separated by spaces.
|
|
|
|
|
|
|
|
To map all video (or audio) streams to an adaptation set, @code{v} (or
|
|
|
|
@code{a}) can be used as stream identifier instead of IDs.
|
|
|
|
|
|
|
|
When no assignment is defined, this defaults to an adaptation set for
|
|
|
|
each stream.
|
|
|
|
|
|
|
|
The following optional fields can also be specified:
|
|
|
|
|
2017-01-29 16:26:33 +02:00
|
|
|
@table @option
|
2024-01-19 01:19:25 +02:00
|
|
|
@item descriptor
|
|
|
|
Define the descriptor as defined by ISO/IEC 23009-1:2014/Amd.2:2015.
|
|
|
|
|
|
|
|
For example:
|
|
|
|
@example
|
|
|
|
<SupplementalProperty schemeIdUri=\"urn:mpeg:dash:srd:2014\" value=\"0,0,0,1,1,2,2\"/>
|
|
|
|
@end example
|
2017-01-29 16:26:33 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
The descriptor string should be a self-closing XML tag.
|
2017-01-29 16:26:33 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item frag_duration
|
|
|
|
Override the global fragment duration specified with the
|
|
|
|
@option{frag_duration} option.
|
|
|
|
|
|
|
|
@item frag_type
|
|
|
|
Override the global fragment type specified with the
|
|
|
|
@option{frag_type} option.
|
|
|
|
|
|
|
|
@item seg_duration
|
|
|
|
Override the global segment duration specified with the
|
|
|
|
@option{seg_duration} option.
|
|
|
|
|
|
|
|
@item trick_id
|
|
|
|
Mark an adaptation set as containing streams meant to be used for
|
|
|
|
Trick Mode for the referenced adaptation set.
|
|
|
|
@end table
|
|
|
|
|
|
|
|
A few examples of possible values for the @option{adaptation_sets}
|
|
|
|
option follow:
|
|
|
|
@example
|
|
|
|
id=0,seg_duration=2,frag_duration=1,frag_type=duration,streams=v id=1,seg_duration=2,frag_type=none,streams=a
|
|
|
|
@end example
|
|
|
|
|
|
|
|
@example
|
|
|
|
id=0,seg_duration=2,frag_type=none,streams=0 id=1,seg_duration=10,frag_type=none,trick_id=0,streams=1
|
|
|
|
@end example
|
|
|
|
|
|
|
|
@item dash_segment_type @var{type}
|
|
|
|
Set DASH segment files type.
|
|
|
|
|
|
|
|
Possible values:
|
|
|
|
@table @samp
|
|
|
|
@item auto
|
|
|
|
The dash segment files format will be selected based on the stream
|
|
|
|
codec. This is the default mode.
|
|
|
|
@item mp4
|
|
|
|
the dash segment files will be in ISOBMFF/MP4 format
|
|
|
|
@item webm
|
|
|
|
the dash segment files will be in WebM format
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@item extra_window_size @var{size}
|
|
|
|
Set the maximum number of segments kept outside of the manifest before
|
|
|
|
removing from disk.
|
2019-07-19 09:43:46 +02:00
|
|
|
|
2019-06-28 15:09:25 +02:00
|
|
|
@item format_options @var{options_list}
|
2024-01-19 01:19:25 +02:00
|
|
|
Set container format (mp4/webm) options using a @code{:}-separated list of
|
2018-05-07 11:58:02 +02:00
|
|
|
key=value parameters. Values containing @code{:} special characters must be
|
|
|
|
escaped.
|
2018-05-04 07:15:58 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item frag_duration @var{duration}
|
|
|
|
Set the length in seconds of fragments within segments, fractional
|
|
|
|
value can also be set.
|
|
|
|
|
|
|
|
@item frag_type @var{type}
|
|
|
|
Set the type of interval for fragmentation.
|
2019-03-21 08:17:08 +02:00
|
|
|
|
2018-05-04 07:15:58 +02:00
|
|
|
Possible values:
|
2024-01-19 01:19:25 +02:00
|
|
|
@table @samp
|
2018-11-17 19:40:50 +02:00
|
|
|
@item auto
|
2024-01-19 01:19:25 +02:00
|
|
|
set one fragment per segment
|
2018-11-17 19:40:50 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item every_frame
|
|
|
|
fragment at every frame
|
2018-05-04 07:15:58 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item duration
|
|
|
|
fragment at specific time intervals
|
|
|
|
|
|
|
|
@item pframes
|
|
|
|
fragment at keyframes and following P-Frame reordering (Video only,
|
|
|
|
experimental)
|
2019-06-28 15:09:25 +02:00
|
|
|
@end table
|
2018-05-04 07:15:58 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item global_sidx @var{bool}
|
|
|
|
Write global @code{SIDX} atom. Applicable only for single file, mp4
|
|
|
|
output, non-streaming mode.
|
|
|
|
|
|
|
|
@item hls_master_name @var{file_name}
|
|
|
|
HLS master playlist name. Default is @file{master.m3u8}.
|
|
|
|
|
|
|
|
@item hls_playlist @var{bool}
|
|
|
|
Generate HLS playlist files. The master playlist is generated with
|
|
|
|
filename specified by the @option{hls_master_name} option. One media
|
|
|
|
playlist file is generated for each stream with filenames
|
|
|
|
@file{media_0.m3u8}, @file{media_1.m3u8}, etc.
|
|
|
|
|
|
|
|
@item http_opts @var{http_opts}
|
|
|
|
Specify a list of @code{:}-separated key=value options to pass to the
|
|
|
|
underlying HTTP protocol. Applicable only for HTTP output.
|
|
|
|
|
|
|
|
@item http_persistent @var{bool}
|
|
|
|
Use persistent HTTP connections. Applicable only for HTTP output.
|
|
|
|
|
|
|
|
@item http_user_agent @var{user_agent}
|
|
|
|
Override User-Agent field in HTTP header. Applicable only for HTTP
|
|
|
|
output.
|
|
|
|
|
|
|
|
@item ignore_io_errors @var{bool}
|
|
|
|
Ignore IO errors during open and write. Useful for long-duration runs
|
|
|
|
with network output. This is disabled by default.
|
2018-11-28 19:06:17 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item index_correction @var{bool}
|
|
|
|
Enable or disable segment index correction logic. Applicable only when
|
|
|
|
@option{use_template} is enabled and @option{use_timeline} is
|
|
|
|
disabled. This is disabled by default.
|
|
|
|
|
|
|
|
When enabled, the logic monitors the flow of segment indexes. If a
|
|
|
|
streams's segment index value is not at the expected real time
|
|
|
|
position, then the logic corrects that index value.
|
|
|
|
|
|
|
|
Typically this logic is needed in live streaming use cases. The
|
|
|
|
network bandwidth fluctuations are common during long run
|
|
|
|
streaming. Each fluctuation can cause the segment indexes fall behind
|
|
|
|
the expected real time position.
|
|
|
|
|
|
|
|
@item init_seg_name @var{init_name}
|
|
|
|
DASH-templated name to use for the initialization segment. Default is
|
|
|
|
@code{init-stream$RepresentationID$.$ext$}. @code{$ext$} is replaced
|
|
|
|
with the file name extension specific for the segment format.
|
|
|
|
|
|
|
|
@item ldash @var{bool}
|
|
|
|
Enable Low-latency Dash by constraining the presence and values of
|
|
|
|
some elements. This is disabled by default.
|
|
|
|
|
|
|
|
@item lhls @var{bool}
|
|
|
|
Enable Low-latency HLS (LHLS). Add @code{#EXT-X-PREFETCH} tag with
|
|
|
|
current segment's URI. hls.js player folks are trying to standardize
|
|
|
|
an open LHLS spec. The draft spec is available at
|
|
|
|
@url{https://github.com/video-dev/hlsjs-rfcs/blob/lhls-spec/proposals/0001-lhls.md}.
|
|
|
|
|
|
|
|
This option tries to comply with the above open spec. It enables
|
|
|
|
@option{streaming} and @option{hls_playlist} options automatically.
|
2018-12-12 18:20:19 +02:00
|
|
|
This is an experimental feature.
|
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
Note: This is not Apple's version LHLS. See
|
|
|
|
@url{https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis}
|
2021-10-21 10:15:32 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item master_m3u8_publish_rate @var{segment_intervals_count}
|
|
|
|
Publish master playlist repeatedly every after specified number of
|
|
|
|
segment intervals.
|
2019-12-21 19:32:48 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item max_playback_rate @var{rate}
|
|
|
|
Set the maximum playback rate indicated as appropriate for the
|
|
|
|
purposes of automatically adjusting playback latency and buffer
|
|
|
|
occupancy during normal playback by clients.
|
2019-02-19 08:31:32 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item media_seg_name @var{segment_name}
|
|
|
|
DASH-templated name to use for the media segments. Default is
|
|
|
|
@code{chunk-stream$RepresentationID$-$Number%05d$.$ext$}. @code{$ext$}
|
|
|
|
is replaced with the file name extension specific for the segment
|
|
|
|
format.
|
|
|
|
|
|
|
|
@item method @var{method}
|
|
|
|
Use the given HTTP method to create output files. Generally set to @code{PUT}
|
|
|
|
or @code{POST}.
|
2019-12-21 19:32:48 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item min_playback_rate @var{rate}
|
|
|
|
Set the minimum playback rate indicated as appropriate for the
|
|
|
|
purposes of automatically adjusting playback latency and buffer
|
|
|
|
occupancy during normal playback by clients.
|
2019-12-21 19:32:48 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item mpd_profile @var{flags}
|
|
|
|
Set one or more MPD manifest profiles.
|
|
|
|
|
|
|
|
Possible values:
|
|
|
|
@table @samp
|
|
|
|
@item dash
|
|
|
|
MPEG-DASH ISO Base media file format live profile
|
|
|
|
@item dvb_dash
|
|
|
|
DVB-DASH profile
|
|
|
|
@end table
|
|
|
|
|
|
|
|
Default value is @code{dash}.
|
|
|
|
|
|
|
|
@item remove_at_exit @var{bool}
|
|
|
|
Enable or disable removal of all segments when finished. This is
|
|
|
|
disabled by default.
|
|
|
|
|
|
|
|
@item seg_duration @var{duration}
|
|
|
|
Set the segment length in seconds (fractional value can be set). The
|
|
|
|
value is treated as average segment duration when the
|
|
|
|
@option{use_template} option is enabled and the @option{use_timeline}
|
|
|
|
option is disabled and as minimum segment duration for all the other
|
|
|
|
use cases.
|
|
|
|
|
|
|
|
Default value is @code{5}.
|
|
|
|
|
|
|
|
@item single_file @var{bool}
|
|
|
|
Enable or disable storing all segments in one file, accessed using
|
|
|
|
byte ranges. This is disabled by default.
|
|
|
|
|
|
|
|
The name of the single file can be specified with the
|
|
|
|
@option{single_file_name} option, if not specified assume the basename
|
|
|
|
of the manifest file with the output format extension.
|
|
|
|
|
|
|
|
@item single_file_name @var{file_name}
|
|
|
|
DASH-templated name to use for the manifest @code{baseURL}
|
|
|
|
element. Imply that the @option{single_file} option is set to
|
|
|
|
@var{true}. In the template, @code{$ext$} is replaced with the file
|
|
|
|
name extension specific for the segment format.
|
|
|
|
|
|
|
|
@item streaming @var{bool}
|
|
|
|
Enable or disable chunk streaming mode of output. In chunk streaming
|
|
|
|
mode, each frame will be a @code{moof} fragment which forms a
|
|
|
|
chunk. This is disabled by default.
|
2019-12-21 19:32:48 +02:00
|
|
|
|
2020-04-16 03:47:44 +02:00
|
|
|
@item target_latency @var{target_latency}
|
2024-01-19 01:19:25 +02:00
|
|
|
Set an intended target latency in seconds for serving (fractional
|
|
|
|
value can be set). Applicable only when the @option{streaming} and
|
|
|
|
@option{write_prft} options are enabled. This is an informative fields
|
|
|
|
clients can use to measure the latency of the service.
|
|
|
|
|
|
|
|
@item timeout @var{timeout}
|
|
|
|
Set timeout for socket I/O operations expressed in seconds (fractional
|
|
|
|
value can be set). Applicable only for HTTP output.
|
|
|
|
|
|
|
|
@item update_period @var{period}
|
|
|
|
Set the MPD update period, for dynamic content. The unit is
|
|
|
|
second. If set to @code{0}, the period is automatically computed.
|
2019-12-21 19:32:48 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
Default value is @code{0}.
|
|
|
|
|
|
|
|
@item use_template @var{bool}
|
|
|
|
Enable or disable use of @code{SegmentTemplate} instead of
|
|
|
|
@code{SegmentList} in the manifest. This is enabled by default.
|
2020-04-16 03:36:10 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item use_timeline @var{bool}
|
|
|
|
Enable or disable use of @code{SegmentTimeline} within the
|
|
|
|
@code{SegmentTemplate} manifest section. This is enabled by default.
|
2020-04-16 03:36:10 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@item utc_timing_url @var{url}
|
|
|
|
URL of the page that will return the UTC timestamp in ISO
|
|
|
|
format, for example @code{https://time.akamai.com/?iso}
|
|
|
|
|
|
|
|
@item window_size @var{size}
|
|
|
|
Set the maximum number of segments kept in the manifest, discard the
|
|
|
|
oldest one. This is useful for live streaming.
|
2020-06-30 07:41:46 +02:00
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
If the value is @code{0}, all segments are kept in the
|
|
|
|
manifest. Default value is @code{0}.
|
|
|
|
|
|
|
|
@item write_prft @var{write_prft}
|
|
|
|
Write Producer Reference Time elements on supported streams. This also
|
|
|
|
enables writing prft boxes in the underlying muxer. Applicable only
|
|
|
|
when the @var{utc_url} option is enabled. It is set to @var{auto} by
|
|
|
|
default, in which case the muxer will attempt to enable it only in
|
|
|
|
modes that require it.
|
2017-01-29 16:26:33 +02:00
|
|
|
@end table
|
|
|
|
|
2024-01-19 01:19:25 +02:00
|
|
|
@subsection Example
|
|
|
|
Generate a DASH output reading from an input source in realtime using
|
|
|
|
@command{ffmpeg}.
|
|
|
|
|
|
|
|
Two multimedia streams are generated from the input file, both
|
|
|
|
containing a video stream encoded through @samp{libx264}, and an audio
|
|
|
|
stream encoded with @samp{libfdk_aac}. The first multimedia stream
|
|
|
|
contains video with a bitrate of 800k and audio at the default rate,
|
|
|
|
the second with video scaled to 320x170 pixels at 300k and audio
|
|
|
|
resampled at 22005 Hz.
|
|
|
|
|
|
|
|
The @option{window_size} option keeps only the latest 5 segments with
|
|
|
|
the default duration of 5 seconds.
|
|
|
|
|
|
|
|
@example
|
|
|
|
ffmpeg -re -i <input> -map 0 -map 0 -c:a libfdk_aac -c:v libx264 \
|
|
|
|
-b:v:0 800k -profile:v:0 main \
|
|
|
|
-b:v:1 300k -s:v:1 320x170 -profile:v:1 baseline -ar:a:1 22050 \
|
|
|
|
-bf 1 -keyint_min 120 -g 120 -sc_threshold 0 -b_strategy 0 \
|
|
|
|
-use_timeline 1 -use_template 1 -window_size 5 \
|
|
|
|
-adaptation_sets "id=0,streams=v id=1,streams=a" \
|
|
|
|
-f dash /path/to/out.mpd
|
|
|
|
@end example
|
|
|
|
|
2024-01-20 16:10:35 +02:00
|
|
|
@section daud
|
|
|
|
D-Cinema audio muxer.
|
|
|
|
|
|
|
|
It accepts a single 6-channels audio stream resampled at 96000 Hz
|
|
|
|
encoded with the @samp{pcm_24daud} codec.
|
|
|
|
|
|
|
|
@subsection Example
|
|
|
|
Use @command{ffmpeg} to mux input audio to a @samp{5.1} channel layout
|
|
|
|
resampled at 96000Hz:
|
|
|
|
@example
|
2024-03-03 23:44:09 +02:00
|
|
|
ffmpeg -i INPUT -af aresample=96000,pan=5.1 slow.302
|
2024-01-20 16:10:35 +02:00
|
|
|
@end example
|
|
|
|
|
2024-03-03 23:44:09 +02:00
|
|
|
For ffmpeg versions before 7.0 you might have to use the @samp{asetnsamples}
|
|
|
|
filter to limit the muxed packet size, because this format does not support
|
|
|
|
muxing packets larger than 65535 bytes (3640 samples). For newer ffmpeg
|
|
|
|
versions audio is automatically packetized to 36000 byte (2000 sample) packets.
|
2024-01-20 16:10:35 +02:00
|
|
|
|
2024-01-20 17:23:43 +02:00
|
|
|
@section dv
|
|
|
|
DV (Digital Video) muxer.
|
|
|
|
|
|
|
|
It accepts exactly one @samp{dvvideo} video stream and at most two
|
|
|
|
@samp{pcm_s16} audio streams. More constraints are defined by the
|
|
|
|
property of the video, which must correspond to a DV video supported
|
|
|
|
profile, and on the framerate.
|
|
|
|
|
|
|
|
@subsection Example
|
|
|
|
Use @command{ffmpeg} to convert the input:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -s:v 720x480 -pix_fmt yuv411p -r 29.97 -ac 2 -ar 48000 -y out.dv
|
|
|
|
@end example
|
2024-01-20 20:19:23 +02:00
|
|
|
|
|
|
|
@section ffmetadata
|
|
|
|
FFmpeg metadata muxer.
|
|
|
|
|
|
|
|
This muxer writes the streams metadata in the @samp{ffmetadata}
|
|
|
|
format.
|
|
|
|
|
|
|
|
See @ref{metadata,,the Metadata chapter,ffmpeg-formats} for
|
|
|
|
information about the format.
|
|
|
|
|
|
|
|
@subsection Example
|
|
|
|
|
|
|
|
Use @command{ffmpeg} to extract metadata from an input file to a @file{metadata.ffmeta}
|
|
|
|
file in @samp{ffmetadata} format:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f ffmetadata metadata.ffmeta
|
|
|
|
@end example
|
2024-01-20 17:23:43 +02:00
|
|
|
|
2021-04-07 11:11:44 +02:00
|
|
|
@anchor{fifo}
|
|
|
|
@section fifo
|
2024-01-21 12:26:13 +02:00
|
|
|
FIFO (First-In First-Out) muxer.
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
The @samp{fifo} pseudo-muxer allows the separation of encoding and
|
|
|
|
muxing by using a first-in-first-out queue and running the actual muxer
|
|
|
|
in a separate thread.
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
This is especially useful in combination with
|
|
|
|
the @ref{tee} muxer and can be used to send data to several
|
|
|
|
destinations with different reliability/writing speed/latency.
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
The target muxer is either selected from the output name or specified
|
|
|
|
through the @option{fifo_format} option.
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
The behavior of the @samp{fifo} muxer if the queue fills up or if the
|
|
|
|
output fails (e.g. if a packet cannot be written to the output) is
|
|
|
|
selectable:
|
2021-04-07 11:11:44 +02:00
|
|
|
@itemize @bullet
|
|
|
|
@item
|
2024-01-21 12:26:13 +02:00
|
|
|
Output can be transparently restarted with configurable delay between
|
|
|
|
retries based on real time or time of the processed stream.
|
2021-04-07 11:11:44 +02:00
|
|
|
|
|
|
|
@item
|
2024-01-21 12:26:13 +02:00
|
|
|
Encoding can be blocked during temporary failure, or continue transparently
|
|
|
|
dropping packets in case the FIFO queue fills up.
|
2021-04-07 11:11:44 +02:00
|
|
|
@end itemize
|
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
API users should be aware that callback functions
|
|
|
|
(@code{interrupt_callback}, @code{io_open} and @code{io_close}) used
|
|
|
|
within its @code{AVFormatContext} must be thread-safe.
|
|
|
|
|
|
|
|
@subsection Options
|
2021-04-07 11:11:44 +02:00
|
|
|
@table @option
|
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
@item attempt_recovery @var{bool}
|
|
|
|
If failure occurs, attempt to recover the output. This is especially
|
|
|
|
useful when used with network output, since it makes it possible to
|
|
|
|
restart streaming transparently. By default this option is set to
|
|
|
|
@code{false}.
|
|
|
|
|
|
|
|
@item drop_pkts_on_overflow @var{bool}
|
|
|
|
If set to @code{true}, in case the fifo queue fills up, packets will
|
|
|
|
be dropped rather than blocking the encoder. This makes it possible to
|
|
|
|
continue streaming without delaying the input, at the cost of omitting
|
|
|
|
part of the stream. By default this option is set to @code{false}, so in
|
|
|
|
such cases the encoder will be blocked until the muxer processes some
|
|
|
|
of the packets and none of them is lost.
|
|
|
|
|
|
|
|
@item fifo_format @var{format_name}
|
2021-04-07 11:11:44 +02:00
|
|
|
Specify the format name. Useful if it cannot be guessed from the
|
|
|
|
output name suffix.
|
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
@item format_opts @var{options}
|
|
|
|
Specify format options for the underlying muxer. Muxer options can be
|
|
|
|
specified as a list of @var{key}=@var{value} pairs separated by ':'.
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
@item max_recovery_attempts @var{count}
|
|
|
|
Set maximum number of successive unsuccessful recovery attempts after
|
|
|
|
which the output fails permanently. By default this option is set to
|
|
|
|
@code{0} (unlimited).
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
@item queue_size @var{size}
|
|
|
|
Specify size of the queue as a number of packets. Default value is
|
|
|
|
@code{60}.
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
@item recover_any_error @var{bool}
|
|
|
|
If set to @code{true}, recovery will be attempted regardless of type
|
|
|
|
of the error causing the failure. By default this option is set to
|
|
|
|
@code{false} and in case of certain (usually permanent) errors the
|
|
|
|
recovery is not attempted even when the @option{attempt_recovery}
|
|
|
|
option is set to @code{true}.
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
@item recovery_wait_streamtime @var{bool}
|
|
|
|
If set to @code{false}, the real time is used when waiting for the
|
|
|
|
recovery attempt (i.e. the recovery will be attempted after the time
|
|
|
|
specified by the @option{recovery_wait_time} option).
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
If set to @code{true}, the time of the processed stream is taken into
|
|
|
|
account instead (i.e. the recovery will be attempted after discarding
|
|
|
|
the packets corresponding to the @option{recovery_wait_time} option).
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
By default this option is set to @code{false}.
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
@item recovery_wait_time @var{duration}
|
|
|
|
Specify waiting time in seconds before the next recovery attempt after
|
|
|
|
previous unsuccessful recovery attempt. Default value is @code{5}.
|
2021-04-07 11:11:44 +02:00
|
|
|
|
|
|
|
@item restart_with_keyframe @var{bool}
|
|
|
|
Specify whether to wait for the keyframe after recovering from
|
2024-01-21 12:26:13 +02:00
|
|
|
queue overflow or failure. This option is set to @code{false} by default.
|
2021-04-07 11:11:44 +02:00
|
|
|
|
|
|
|
@item timeshift @var{duration}
|
2024-01-21 12:26:13 +02:00
|
|
|
Buffer the specified amount of packets and delay writing the
|
|
|
|
output. Note that the value of the @option{queue_size} option must be
|
|
|
|
big enough to store the packets for timeshift. At the end of the input
|
|
|
|
the fifo buffer is flushed at realtime speed.
|
2021-04-07 11:11:44 +02:00
|
|
|
@end table
|
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
@subsection Example
|
2021-04-07 11:11:44 +02:00
|
|
|
|
2024-01-21 12:26:13 +02:00
|
|
|
Use @command{ffmpeg} to stream to an RTMP server, continue processing
|
|
|
|
the stream at real-time rate even in case of temporary failure
|
|
|
|
(network outage) and attempt to recover streaming every second
|
|
|
|
indefinitely:
|
2021-04-07 11:11:44 +02:00
|
|
|
@example
|
2024-01-21 12:26:13 +02:00
|
|
|
ffmpeg -re -i ... -c:v libx264 -c:a aac -f fifo -fifo_format flv \
|
|
|
|
-drop_pkts_on_overflow 1 -attempt_recovery 1 -recovery_wait_time 1 \
|
|
|
|
-map 0:v -map 0:a rtmp://example.com/live/stream_name
|
2021-04-07 11:11:44 +02:00
|
|
|
@end example
|
|
|
|
|
2024-03-12 19:28:28 +02:00
|
|
|
@section film_cpk
|
|
|
|
Sega film (.cpk) muxer.
|
|
|
|
|
|
|
|
This format was used as internal format for several Sega games.
|
|
|
|
|
|
|
|
For more information regarding the Sega film file format, visit
|
|
|
|
@url{http://wiki.multimedia.cx/index.php?title=Sega_FILM}.
|
|
|
|
|
|
|
|
It accepts at maximum one @samp{cinepak} or raw video stream, and at
|
|
|
|
maximum one audio stream.
|
|
|
|
|
2024-03-12 22:33:58 +02:00
|
|
|
@section filmstrip
|
|
|
|
Adobe Filmstrip muxer.
|
|
|
|
|
|
|
|
This format is used by several Adobe tools to store a generated filmstrip export. It
|
|
|
|
accepts a single raw video stream.
|
|
|
|
|
2024-03-12 22:44:55 +02:00
|
|
|
@section fits
|
|
|
|
Flexible Image Transport System (FITS) muxer.
|
|
|
|
|
|
|
|
This image format is used to store astronomical data.
|
|
|
|
|
|
|
|
For more information regarding the format, visit
|
|
|
|
@url{https://fits.gsfc.nasa.gov}.
|
|
|
|
|
2024-03-12 23:00:09 +02:00
|
|
|
@section flac
|
|
|
|
Raw FLAC audio muxer.
|
|
|
|
|
|
|
|
This muxer accepts exactly one FLAC audio stream. Additionally, it is possible to add
|
|
|
|
images with disposition @samp{attached_pic}.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item write_header @var{bool}
|
|
|
|
write the file header if set to @code{true}, default is @code{true}
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@subsection Example
|
|
|
|
Use @command{ffmpeg} to store the audio stream from an input file,
|
|
|
|
together with several pictures used with @samp{attached_pic}
|
|
|
|
disposition:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -i pic1.png -i pic2.jpg -map 0:a -map 1 -map 2 -disposition:v attached_pic OUTPUT
|
|
|
|
@end example
|
|
|
|
|
2021-04-07 11:11:44 +02:00
|
|
|
@section flv
|
|
|
|
Adobe Flash Video Format muxer.
|
|
|
|
|
2024-03-12 23:15:18 +02:00
|
|
|
@subsection Options
|
2021-04-07 11:11:44 +02:00
|
|
|
@table @option
|
|
|
|
@item flvflags @var{flags}
|
|
|
|
Possible values:
|
|
|
|
|
|
|
|
@table @samp
|
|
|
|
@item aac_seq_header_detect
|
|
|
|
Place AAC sequence header based on audio stream data.
|
|
|
|
|
|
|
|
@item no_sequence_end
|
|
|
|
Disable sequence end tag.
|
|
|
|
|
|
|
|
@item no_metadata
|
|
|
|
Disable metadata tag.
|
|
|
|
|
|
|
|
@item no_duration_filesize
|
|
|
|
Disable duration and filesize in metadata when they are equal to zero
|
|
|
|
at the end of stream. (Be used to non-seekable living stream).
|
|
|
|
|
|
|
|
@item add_keyframe_index
|
|
|
|
Used to facilitate seeking; particularly for HTTP pseudo streaming.
|
|
|
|
@end table
|
|
|
|
@end table
|
|
|
|
|
2011-02-01 02:03:48 +02:00
|
|
|
@anchor{framecrc}
|
|
|
|
@section framecrc
|
|
|
|
|
2012-04-07 11:44:07 +03:00
|
|
|
Per-packet CRC (Cyclic Redundancy Check) testing format.
|
2011-02-01 02:03:48 +02:00
|
|
|
|
2012-04-07 11:44:07 +03:00
|
|
|
This muxer computes and prints the Adler-32 CRC for each audio
|
|
|
|
and video packet. By default audio frames are converted to signed
|
2011-02-01 02:03:48 +02:00
|
|
|
16-bit raw audio and video frames to raw video before computing the
|
|
|
|
CRC.
|
|
|
|
|
|
|
|
The output of the muxer consists of a line for each audio and video
|
2012-04-07 11:44:07 +03:00
|
|
|
packet of the form:
|
|
|
|
@example
|
|
|
|
@var{stream_index}, @var{packet_dts}, @var{packet_pts}, @var{packet_duration}, @var{packet_size}, 0x@var{CRC}
|
|
|
|
@end example
|
2011-02-01 02:03:48 +02:00
|
|
|
|
2012-04-07 11:44:07 +03:00
|
|
|
@var{CRC} is a hexadecimal number 0-padded to 8 digits containing the
|
|
|
|
CRC of the packet.
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
@subsection Examples
|
|
|
|
|
2012-04-07 11:44:07 +03:00
|
|
|
For example to compute the CRC of the audio and video frames in
|
|
|
|
@file{INPUT}, converted to raw audio and video packets, and store it
|
|
|
|
in the file @file{out.crc}:
|
2011-02-01 02:03:48 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f framecrc out.crc
|
|
|
|
@end example
|
|
|
|
|
2012-04-07 11:44:07 +03:00
|
|
|
To print the information to stdout, use the command:
|
2011-02-01 02:03:48 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f framecrc -
|
|
|
|
@end example
|
|
|
|
|
2012-04-07 11:44:07 +03:00
|
|
|
With @command{ffmpeg}, you can select the output format to which the
|
|
|
|
audio and video frames are encoded before computing the CRC for each
|
|
|
|
packet by specifying the audio and video codec. For example, to
|
2011-02-01 02:03:48 +02:00
|
|
|
compute the CRC of each decoded input audio frame converted to PCM
|
|
|
|
unsigned 8-bit and of each decoded input video frame converted to
|
|
|
|
MPEG-2 video, use the command:
|
|
|
|
@example
|
2011-12-10 03:25:15 +03:00
|
|
|
ffmpeg -i INPUT -c:a pcm_u8 -c:v mpeg2video -f framecrc -
|
2011-02-01 02:03:48 +02:00
|
|
|
@end example
|
|
|
|
|
2011-07-08 16:34:56 +03:00
|
|
|
See also the @ref{crc} muxer.
|
2011-02-01 02:03:48 +02:00
|
|
|
|
2016-04-12 16:16:18 +02:00
|
|
|
@anchor{framehash}
|
|
|
|
@section framehash
|
2012-04-07 12:05:58 +03:00
|
|
|
|
2016-04-12 16:16:18 +02:00
|
|
|
Per-packet hash testing format.
|
2012-04-07 12:05:58 +03:00
|
|
|
|
2016-04-12 16:16:18 +02:00
|
|
|
This muxer computes and prints a cryptographic hash for each audio
|
|
|
|
and video packet. This can be used for packet-by-packet equality
|
|
|
|
checks without having to individually do a binary comparison on each.
|
|
|
|
|
|
|
|
By default audio frames are converted to signed 16-bit raw audio and
|
|
|
|
video frames to raw video before computing the hash, but the output
|
|
|
|
of explicit conversions to other codecs can also be used. It uses the
|
|
|
|
SHA-256 cryptographic hash function by default, but supports several
|
|
|
|
other algorithms.
|
2012-04-07 12:05:58 +03:00
|
|
|
|
|
|
|
The output of the muxer consists of a line for each audio and video
|
|
|
|
packet of the form:
|
|
|
|
@example
|
2016-04-12 16:16:18 +02:00
|
|
|
@var{stream_index}, @var{packet_dts}, @var{packet_pts}, @var{packet_duration}, @var{packet_size}, @var{hash}
|
2012-04-07 12:05:58 +03:00
|
|
|
@end example
|
|
|
|
|
2016-04-12 16:16:18 +02:00
|
|
|
@var{hash} is a hexadecimal number representing the computed hash
|
2012-04-07 12:05:58 +03:00
|
|
|
for the packet.
|
|
|
|
|
2016-04-12 16:16:18 +02:00
|
|
|
@table @option
|
|
|
|
@item hash @var{algorithm}
|
|
|
|
Use the cryptographic hash function specified by the string @var{algorithm}.
|
|
|
|
Supported values include @code{MD5}, @code{murmur3}, @code{RIPEMD128},
|
|
|
|
@code{RIPEMD160}, @code{RIPEMD256}, @code{RIPEMD320}, @code{SHA160},
|
|
|
|
@code{SHA224}, @code{SHA256} (default), @code{SHA512/224}, @code{SHA512/256},
|
|
|
|
@code{SHA384}, @code{SHA512}, @code{CRC32} and @code{adler32}.
|
|
|
|
|
|
|
|
@end table
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
@subsection Examples
|
|
|
|
|
2016-04-12 16:16:18 +02:00
|
|
|
To compute the SHA-256 hash of the audio and video frames in @file{INPUT},
|
|
|
|
converted to raw audio and video packets, and store it in the file
|
|
|
|
@file{out.sha256}:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f framehash out.sha256
|
|
|
|
@end example
|
|
|
|
|
|
|
|
To print the information to stdout, using the MD5 hash function, use
|
|
|
|
the command:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f framehash -hash md5 -
|
|
|
|
@end example
|
|
|
|
|
|
|
|
See also the @ref{hash} muxer.
|
|
|
|
|
|
|
|
@anchor{framemd5}
|
|
|
|
@section framemd5
|
|
|
|
|
|
|
|
Per-packet MD5 testing format.
|
|
|
|
|
|
|
|
This is a variant of the @ref{framehash} muxer. Unlike that muxer,
|
|
|
|
it defaults to using the MD5 hash function.
|
|
|
|
|
|
|
|
@subsection Examples
|
|
|
|
|
|
|
|
To compute the MD5 hash of the audio and video frames in @file{INPUT},
|
|
|
|
converted to raw audio and video packets, and store it in the file
|
|
|
|
@file{out.md5}:
|
2012-04-07 12:05:58 +03:00
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f framemd5 out.md5
|
|
|
|
@end example
|
|
|
|
|
|
|
|
To print the information to stdout, use the command:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f framemd5 -
|
|
|
|
@end example
|
|
|
|
|
2016-04-12 16:16:18 +02:00
|
|
|
See also the @ref{framehash} and @ref{md5} muxers.
|
2012-04-07 12:05:58 +03:00
|
|
|
|
2013-10-19 21:39:30 +03:00
|
|
|
@anchor{gif}
|
|
|
|
@section gif
|
|
|
|
Animated GIF muxer.
|
|
|
|
|
2024-03-12 23:23:59 +02:00
|
|
|
Note that the GIF format has a very large time base: the delay between two frames can
|
|
|
|
therefore not be smaller than one centi second.
|
2013-10-19 21:39:30 +03:00
|
|
|
|
2024-03-12 23:23:59 +02:00
|
|
|
@subsection Options
|
2013-10-19 21:39:30 +03:00
|
|
|
@table @option
|
2024-03-12 23:23:59 +02:00
|
|
|
@item loop @var{bool}
|
2013-10-19 21:39:30 +03:00
|
|
|
Set the number of times to loop the output. Use @code{-1} for no loop, @code{0}
|
|
|
|
for looping indefinitely (default).
|
|
|
|
|
2024-03-12 23:23:59 +02:00
|
|
|
@item final_delay @var{delay}
|
2013-10-19 21:39:30 +03:00
|
|
|
Force the delay (expressed in centiseconds) after the last frame. Each frame
|
|
|
|
ends with a delay until the next frame. The default is @code{-1}, which is a
|
|
|
|
special value to tell the muxer to re-use the previous delay. In case of a
|
|
|
|
loop, you might want to customize this value to mark a pause for instance.
|
|
|
|
@end table
|
|
|
|
|
2024-03-12 23:23:59 +02:00
|
|
|
@subsection Example
|
|
|
|
Encode a gif looping 10 times, with a 5 seconds delay between
|
2013-10-19 21:39:30 +03:00
|
|
|
the loops:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -loop 10 -final_delay 500 out.gif
|
|
|
|
@end example
|
|
|
|
|
2016-10-09 20:51:57 +02:00
|
|
|
Note 1: if you wish to extract the frames into separate GIF files, you need to
|
2013-10-19 21:39:30 +03:00
|
|
|
force the @ref{image2} muxer:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -c:v gif -f image2 "out%d.gif"
|
|
|
|
@end example
|
|
|
|
|
2024-03-20 17:14:52 +02:00
|
|
|
@section gxf
|
|
|
|
General eXchange Format (GXF) muxer.
|
|
|
|
|
|
|
|
GXF was developed by Grass Valley Group, then standardized by SMPTE as SMPTE
|
|
|
|
360M and was extended in SMPTE RDD 14-2007 to include high-definition video
|
|
|
|
resolutions.
|
|
|
|
|
|
|
|
It accepts at most one video stream with codec @samp{mjpeg}, or
|
|
|
|
@samp{mpeg1video}, or @samp{mpeg2video}, or @samp{dvvideo} with resolution
|
|
|
|
@samp{512x480} or @samp{608x576}, and several audio streams with rate 48000Hz
|
|
|
|
and codec @samp{pcm16_le}.
|
|
|
|
|
2016-04-12 16:16:18 +02:00
|
|
|
@anchor{hash}
|
|
|
|
@section hash
|
|
|
|
|
|
|
|
Hash testing format.
|
|
|
|
|
|
|
|
This muxer computes and prints a cryptographic hash of all the input
|
|
|
|
audio and video frames. This can be used for equality checks without
|
|
|
|
having to do a complete binary comparison.
|
|
|
|
|
|
|
|
By default audio frames are converted to signed 16-bit raw audio and
|
|
|
|
video frames to raw video before computing the hash, but the output
|
|
|
|
of explicit conversions to other codecs can also be used. Timestamps
|
|
|
|
are ignored. It uses the SHA-256 cryptographic hash function by default,
|
|
|
|
but supports several other algorithms.
|
|
|
|
|
|
|
|
The output of the muxer consists of a single line of the form:
|
|
|
|
@var{algo}=@var{hash}, where @var{algo} is a short string representing
|
|
|
|
the hash function used, and @var{hash} is a hexadecimal number
|
|
|
|
representing the computed hash.
|
|
|
|
|
|
|
|
@table @option
|
|
|
|
@item hash @var{algorithm}
|
|
|
|
Use the cryptographic hash function specified by the string @var{algorithm}.
|
|
|
|
Supported values include @code{MD5}, @code{murmur3}, @code{RIPEMD128},
|
|
|
|
@code{RIPEMD160}, @code{RIPEMD256}, @code{RIPEMD320}, @code{SHA160},
|
|
|
|
@code{SHA224}, @code{SHA256} (default), @code{SHA512/224}, @code{SHA512/256},
|
|
|
|
@code{SHA384}, @code{SHA512}, @code{CRC32} and @code{adler32}.
|
|
|
|
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@subsection Examples
|
|
|
|
|
|
|
|
To compute the SHA-256 hash of the input converted to raw audio and
|
|
|
|
video, and store it in the file @file{out.sha256}:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f hash out.sha256
|
|
|
|
@end example
|
|
|
|
|
|
|
|
To print an MD5 hash to stdout use the command:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f hash -hash md5 -
|
|
|
|
@end example
|
|
|
|
|
|
|
|
See also the @ref{framehash} muxer.
|
|
|
|
|
2024-03-20 18:27:20 +02:00
|
|
|
@anchor{hds}
|
|
|
|
@section hds
|
|
|
|
HTTP Dynamic Streaming (HDS) muxer.
|
|
|
|
|
|
|
|
HTTP dynamic streaming, or HDS, is an adaptive bitrate streaming method
|
|
|
|
developed by Adobe. HDS delivers MP4 video content over HTTP connections. HDS
|
|
|
|
can be used for on-demand streaming or live streaming.
|
|
|
|
|
|
|
|
This muxer creates an .f4m (Adobe Flash Media Manifest File) manifest, an .abst
|
|
|
|
(Adobe Bootstrap File) for each stream, and segment files in a directory
|
|
|
|
specified as the output.
|
|
|
|
|
|
|
|
These needs to be accessed by an HDS player throuhg HTTPS for it to be able to
|
|
|
|
perform playback on the generated stream.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
@table @option
|
|
|
|
@item extra_window_size @var{int}
|
|
|
|
number of fragments kept outside of the manifest before removing from disk
|
|
|
|
|
|
|
|
@item min_frag_duration @var{microseconds}
|
|
|
|
minimum fragment duration (in microseconds), default value is 1 second
|
|
|
|
(@code{10000000})
|
|
|
|
|
|
|
|
@item remove_at_exit @var{bool}
|
|
|
|
remove all fragments when finished when set to @code{true}
|
|
|
|
|
|
|
|
@item window_size @var{int}
|
|
|
|
number of fragments kept in the manifest, if set to a value different from
|
|
|
|
@code{0}. By default all segments are kept in the output directory.
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@subsection Example
|
|
|
|
Use @command{ffmpeg} to generate HDS files to the @file{output.hds} directory in
|
|
|
|
real-time rate:
|
|
|
|
@example
|
|
|
|
ffmpeg -re -i INPUT -f hds -b:v 200k output.hds
|
|
|
|
@end example
|
|
|
|
|
2012-10-26 17:36:56 +03:00
|
|
|
@anchor{hls}
|
|
|
|
@section hls
|
|
|
|
|
|
|
|
Apple HTTP Live Streaming muxer that segments MPEG-TS according to
|
2014-01-02 02:30:37 +03:00
|
|
|
the HTTP Live Streaming (HLS) specification.
|
2012-10-26 17:36:56 +03:00
|
|
|
|
2014-09-15 16:26:57 +03:00
|
|
|
It creates a playlist file, and one or more segment files. The output filename
|
|
|
|
specifies the playlist filename.
|
|
|
|
|
|
|
|
By default, the muxer creates a file for each segment produced. These files
|
|
|
|
have the same name as the playlist, followed by a sequential number and a
|
|
|
|
.ts extension.
|
2012-10-26 17:36:56 +03:00
|
|
|
|
2017-10-13 12:24:51 +02:00
|
|
|
Make sure to require a closed GOP when encoding and to set the GOP
|
|
|
|
size to fit your segment time constraint.
|
|
|
|
|
2014-01-02 02:30:37 +03:00
|
|
|
For example, to convert an input file with @command{ffmpeg}:
|
2012-10-26 17:36:56 +03:00
|
|
|
@example
|
2017-11-12 04:47:50 +02:00
|
|
|
ffmpeg -i in.mkv -c:v h264 -flags +cgop -g 30 -hls_time 1 out.m3u8
|
2012-10-26 17:36:56 +03:00
|
|
|
@end example
|
2014-09-15 16:26:57 +03:00
|
|
|
This example will produce the playlist, @file{out.m3u8}, and segment files:
|
|
|
|
@file{out0.ts}, @file{out1.ts}, @file{out2.ts}, etc.
|
2012-10-26 17:36:56 +03:00
|
|
|
|
2014-01-02 02:30:37 +03:00
|
|
|
See also the @ref{segment} muxer, which provides a more generic and
|
2014-01-02 11:32:37 +03:00
|
|
|
flexible implementation of a segmenter, and can be used to perform HLS
|
2014-01-02 02:30:37 +03:00
|
|
|
segmentation.
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
@subsection Options
|
2012-10-26 17:36:56 +03:00
|
|
|
@table @option
|
2021-01-17 03:07:28 +02:00
|
|
|
@item hls_init_time @var{duration}
|
|
|
|
Set the initial target segment length. Default value is @var{0}.
|
|
|
|
|
|
|
|
@var{duration} must be a time duration specification,
|
|
|
|
see @ref{time duration syntax,,the Time duration section in the ffmpeg-utils(1) manual,ffmpeg-utils}.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
Segment will be cut on the next key frame after this time has passed on the
|
|
|
|
first m3u8 list. After the initial playlist is filled, @command{ffmpeg} will cut
|
|
|
|
segments at duration equal to @option{hls_time}.
|
2016-08-27 01:35:54 +02:00
|
|
|
|
2021-01-17 03:07:28 +02:00
|
|
|
@item hls_time @var{duration}
|
|
|
|
Set the target segment length. Default value is 2.
|
|
|
|
|
|
|
|
@var{duration} must be a time duration specification,
|
|
|
|
see @ref{time duration syntax,,the Time duration section in the ffmpeg-utils(1) manual,ffmpeg-utils}.
|
2016-06-08 11:42:51 +02:00
|
|
|
Segment will be cut on the next key frame after this time has passed.
|
2014-01-02 02:30:37 +03:00
|
|
|
|
|
|
|
@item hls_list_size @var{size}
|
|
|
|
Set the maximum number of playlist entries. If set to 0 the list file
|
|
|
|
will contain all the segments. Default value is 5.
|
|
|
|
|
2018-04-13 09:39:49 +02:00
|
|
|
@item hls_delete_threshold @var{size}
|
|
|
|
Set the number of unreferenced segments to keep on disk before @code{hls_flags delete_segments}
|
|
|
|
deletes them. Increase this to allow continue clients to download segments which
|
|
|
|
were recently referenced in the playlist. Default value is 1, meaning segments older than
|
2024-03-29 13:30:57 +02:00
|
|
|
@option{hls_list_size+1} will be deleted.
|
2018-04-13 09:39:49 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item hls_start_number_source @var{source}
|
2017-01-12 14:43:10 +02:00
|
|
|
Start the playlist sequence number (@code{#EXT-X-MEDIA-SEQUENCE}) according to the specified source.
|
2024-03-29 13:30:57 +02:00
|
|
|
Unless @option{hls_flags single_file} is set, it also specifies source of starting sequence numbers of
|
|
|
|
segment and subtitle filenames. In any case, if @option{hls_flags append_list}
|
2017-01-12 14:43:10 +02:00
|
|
|
is set and read playlist sequence number is greater than the specified start sequence number,
|
|
|
|
then that value will be used as start value.
|
|
|
|
|
|
|
|
It accepts the following values:
|
|
|
|
|
|
|
|
@table @option
|
|
|
|
|
|
|
|
@item generic (default)
|
2024-03-29 13:30:57 +02:00
|
|
|
Set the start numbers according to the @option{start_number} option value.
|
2017-01-12 14:43:10 +02:00
|
|
|
|
|
|
|
@item epoch
|
2024-03-29 13:30:57 +02:00
|
|
|
Set the start number as the seconds since epoch (1970-01-01 00:00:00).
|
2017-01-12 14:43:10 +02:00
|
|
|
|
2020-04-18 22:15:39 +02:00
|
|
|
@item epoch_us
|
2024-03-29 13:30:57 +02:00
|
|
|
Set the start number as the microseconds since epoch (1970-01-01 00:00:00).
|
2020-04-18 22:15:39 +02:00
|
|
|
|
2017-01-12 14:43:10 +02:00
|
|
|
@item datetime
|
2024-03-29 13:30:57 +02:00
|
|
|
Set the start number based on the current date/time as YYYYmmddHHMMSS. e.g. 20161231235759.
|
2017-01-12 14:43:10 +02:00
|
|
|
@end table
|
|
|
|
|
2014-01-02 02:30:37 +03:00
|
|
|
@item start_number @var{number}
|
2017-01-12 14:43:10 +02:00
|
|
|
Start the playlist sequence number (@code{#EXT-X-MEDIA-SEQUENCE}) from the specified @var{number}
|
2024-03-29 13:30:57 +02:00
|
|
|
when @option{hls_start_number_source} value is @var{generic}. (This is the default case.)
|
|
|
|
Unless @option{hls_flags single_file} is set, it also specifies starting sequence numbers of segment and subtitle filenames.
|
2017-01-12 14:43:10 +02:00
|
|
|
Default value is 0.
|
2014-01-02 02:30:37 +03:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item hls_allow_cache @var{bool}
|
2014-10-03 22:43:46 +03:00
|
|
|
Explicitly set whether the client MAY (1) or MUST NOT (0) cache media segments.
|
2014-09-22 11:17:01 +03:00
|
|
|
|
2014-04-29 17:37:22 +03:00
|
|
|
@item hls_base_url @var{baseurl}
|
2014-03-18 23:19:00 +03:00
|
|
|
Append @var{baseurl} to every entry in the playlist.
|
|
|
|
Useful to generate playlists with absolute paths.
|
2014-04-29 17:37:22 +03:00
|
|
|
|
2014-01-02 02:30:37 +03:00
|
|
|
Note that the playlist sequence number must be unique for each segment
|
|
|
|
and it is not to be confused with the segment filename sequence number
|
|
|
|
which can be cyclic, for example if the @option{wrap} option is
|
|
|
|
specified.
|
2014-09-15 16:26:57 +03:00
|
|
|
|
2014-12-05 23:20:15 +02:00
|
|
|
@item hls_segment_filename @var{filename}
|
2024-03-29 13:30:57 +02:00
|
|
|
Set the segment filename. Unless the @option{hls_flags} option is set with
|
|
|
|
@samp{single_file}, @var{filename} is used as a string format with the
|
|
|
|
segment number appended.
|
|
|
|
|
|
|
|
For example:
|
2014-12-05 23:20:15 +02:00
|
|
|
@example
|
2016-09-28 12:12:38 +02:00
|
|
|
ffmpeg -i in.nut -hls_segment_filename 'file%03d.ts' out.m3u8
|
2014-12-05 23:20:15 +02:00
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
|
|
|
|
will produce the playlist, @file{out.m3u8}, and segment files:
|
2014-12-05 23:20:15 +02:00
|
|
|
@file{file000.ts}, @file{file001.ts}, @file{file002.ts}, etc.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@var{filename} may contain a full path or relative path specification,
|
|
|
|
but only the file name part without any path will be contained in the m3u8 segment list.
|
2017-01-03 16:57:51 +02:00
|
|
|
Should a relative path be specified, the path of the created segment
|
|
|
|
files will be relative to the current working directory.
|
2024-03-29 13:30:57 +02:00
|
|
|
When @option{strftime_mkdir} is set, the whole expanded value of @var{filename} will be written into the m3u8 segment list.
|
2017-01-03 16:57:51 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
When @option{var_stream_map} is set with two or more variant streams, the
|
|
|
|
@var{filename} pattern must contain the string "%v", and this string will be
|
|
|
|
expanded to the position of variant stream index in the generated segment file
|
|
|
|
names.
|
|
|
|
|
|
|
|
For example:
|
2018-01-02 04:46:17 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -i in.ts -b:v:0 1000k -b:v:1 256k -b:a:0 64k -b:a:1 32k \
|
|
|
|
-map 0:v -map 0:a -map 0:v -map 0:a -f hls -var_stream_map "v:0,a:0 v:1,a:1" \
|
|
|
|
-hls_segment_filename 'file_%v_%03d.ts' out_%v.m3u8
|
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
|
|
|
|
will produce the playlists segment file sets:
|
2018-01-02 04:46:17 +02:00
|
|
|
@file{file_0_000.ts}, @file{file_0_001.ts}, @file{file_0_002.ts}, etc. and
|
|
|
|
@file{file_1_000.ts}, @file{file_1_001.ts}, @file{file_1_002.ts}, etc.
|
2017-01-03 16:57:51 +02:00
|
|
|
|
2018-01-02 04:46:48 +02:00
|
|
|
The string "%v" may be present in the filename or in the last directory name
|
2019-06-22 15:55:54 +02:00
|
|
|
containing the file, but only in one of them. (Additionally, %v may appear multiple times in the last
|
|
|
|
sub-directory or filename.) If the string %v is present in the directory name, then
|
2018-01-02 04:46:48 +02:00
|
|
|
sub-directories are created after expanding the directory name pattern. This
|
|
|
|
enables creation of segments corresponding to different variant streams in
|
|
|
|
subdirectories.
|
2024-03-29 13:30:57 +02:00
|
|
|
|
|
|
|
For example:
|
2018-01-02 04:46:48 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -i in.ts -b:v:0 1000k -b:v:1 256k -b:a:0 64k -b:a:1 32k \
|
|
|
|
-map 0:v -map 0:a -map 0:v -map 0:a -f hls -var_stream_map "v:0,a:0 v:1,a:1" \
|
|
|
|
-hls_segment_filename 'vs%v/file_%03d.ts' vs%v/out.m3u8
|
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
will produce the playlists segment file sets:
|
2018-01-02 04:46:48 +02:00
|
|
|
@file{vs0/file_000.ts}, @file{vs0/file_001.ts}, @file{vs0/file_002.ts}, etc. and
|
|
|
|
@file{vs1/file_000.ts}, @file{vs1/file_001.ts}, @file{vs1/file_002.ts}, etc.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item strftime @var{bool}
|
|
|
|
Use @code{strftime()} on @var{filename} to expand the segment filename with
|
|
|
|
localtime. The segment number is also available in this mode, but to use it,
|
|
|
|
you need to set @samp{second_level_segment_index} in the @option{hls_flag} and
|
|
|
|
%%d will be the specifier.
|
|
|
|
|
|
|
|
For example:
|
2016-02-03 23:20:07 +02:00
|
|
|
@example
|
2018-09-03 05:10:35 +02:00
|
|
|
ffmpeg -i in.nut -strftime 1 -hls_segment_filename 'file-%Y%m%d-%s.ts' out.m3u8
|
2016-02-03 23:20:07 +02:00
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
will produce the playlist, @file{out.m3u8}, and segment files:
|
2016-02-03 23:20:07 +02:00
|
|
|
@file{file-20160215-1455569023.ts}, @file{file-20160215-1455569024.ts}, etc.
|
2024-03-29 13:30:57 +02:00
|
|
|
Note: On some systems/environments, the @code{%s} specifier is not
|
|
|
|
available. See @code{strftime()} documentation.
|
|
|
|
|
|
|
|
For example:
|
2016-12-27 04:40:35 +02:00
|
|
|
@example
|
2018-09-03 05:10:35 +02:00
|
|
|
ffmpeg -i in.nut -strftime 1 -hls_flags second_level_segment_index -hls_segment_filename 'file-%Y%m%d-%%04d.ts' out.m3u8
|
2016-12-27 04:40:35 +02:00
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
will produce the playlist, @file{out.m3u8}, and segment files:
|
2016-12-27 04:40:35 +02:00
|
|
|
@file{file-20160215-0001.ts}, @file{file-20160215-0002.ts}, etc.
|
2016-02-03 23:20:07 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item strftime_mkdir @var{bool}
|
|
|
|
Used together with @option{strftime}, it will create all subdirectories which
|
|
|
|
are present in the expanded values of option @option{hls_segment_filename}.
|
|
|
|
|
|
|
|
For example:
|
2016-02-03 23:20:07 +02:00
|
|
|
@example
|
2018-09-03 05:10:35 +02:00
|
|
|
ffmpeg -i in.nut -strftime 1 -strftime_mkdir 1 -hls_segment_filename '%Y%m%d/file-%Y%m%d-%s.ts' out.m3u8
|
2016-02-03 23:20:07 +02:00
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
will create a directory @file{201560215} (if it does not exist), and then
|
2016-02-03 23:20:07 +02:00
|
|
|
produce the playlist, @file{out.m3u8}, and segment files:
|
2024-03-29 13:30:57 +02:00
|
|
|
@file{20160215/file-20160215-1455569023.ts},
|
|
|
|
@file{20160215/file-20160215-1455569024.ts}, etc.
|
2017-01-03 16:57:51 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
For example:
|
2017-01-03 16:57:51 +02:00
|
|
|
@example
|
2018-09-03 05:10:35 +02:00
|
|
|
ffmpeg -i in.nut -strftime 1 -strftime_mkdir 1 -hls_segment_filename '%Y/%m/%d/file-%Y%m%d-%s.ts' out.m3u8
|
2017-01-03 16:57:51 +02:00
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
will create a directory hierarchy @file{2016/02/15} (if any of them do not
|
|
|
|
exist), and then produce the playlist, @file{out.m3u8}, and segment files:
|
|
|
|
@file{2016/02/15/file-20160215-1455569023.ts},
|
|
|
|
@file{2016/02/15/file-20160215-1455569024.ts}, etc.
|
2016-02-03 23:20:07 +02:00
|
|
|
|
2021-11-18 08:58:54 +02:00
|
|
|
@item hls_segment_options @var{options_list}
|
|
|
|
Set output format options using a :-separated list of key=value
|
|
|
|
parameters. Values containing @code{:} special characters must be
|
|
|
|
escaped.
|
2016-02-03 23:20:07 +02:00
|
|
|
|
2015-06-15 20:58:07 +02:00
|
|
|
@item hls_key_info_file @var{key_info_file}
|
|
|
|
Use the information in @var{key_info_file} for segment encryption. The first
|
|
|
|
line of @var{key_info_file} specifies the key URI written to the playlist. The
|
|
|
|
key URL is used to access the encryption key during playback. The second line
|
|
|
|
specifies the path to the key file used to obtain the key during the encryption
|
|
|
|
process. The key file is read as a single packed array of 16 octets in binary
|
|
|
|
format. The optional third line specifies the initialization vector (IV) as a
|
|
|
|
hexadecimal string to be used instead of the segment sequence number (default)
|
|
|
|
for encryption. Changes to @var{key_info_file} will result in segment
|
|
|
|
encryption with the new key/IV and an entry in the playlist for the new key
|
2024-03-29 13:30:57 +02:00
|
|
|
URI/IV if @option{hls_flags periodic_rekey} is enabled.
|
2015-06-15 20:58:07 +02:00
|
|
|
|
|
|
|
Key info file format:
|
|
|
|
@example
|
|
|
|
@var{key URI}
|
|
|
|
@var{key file path}
|
|
|
|
@var{IV} (optional)
|
|
|
|
@end example
|
|
|
|
|
|
|
|
Example key URIs:
|
|
|
|
@example
|
|
|
|
http://server/file.key
|
|
|
|
/path/to/file.key
|
|
|
|
file.key
|
|
|
|
@end example
|
|
|
|
|
|
|
|
Example key file paths:
|
|
|
|
@example
|
|
|
|
file.key
|
|
|
|
/path/to/file.key
|
|
|
|
@end example
|
|
|
|
|
|
|
|
Example IV:
|
|
|
|
@example
|
|
|
|
0123456789ABCDEF0123456789ABCDEF
|
|
|
|
@end example
|
|
|
|
|
|
|
|
Key info file example:
|
|
|
|
@example
|
|
|
|
http://server/file.key
|
|
|
|
/path/to/file.key
|
|
|
|
0123456789ABCDEF0123456789ABCDEF
|
|
|
|
@end example
|
|
|
|
|
|
|
|
Example shell script:
|
|
|
|
@example
|
|
|
|
#!/bin/sh
|
2015-06-16 08:04:45 +02:00
|
|
|
BASE_URL=$@{1:-'.'@}
|
2015-06-15 20:58:07 +02:00
|
|
|
openssl rand 16 > file.key
|
|
|
|
echo $BASE_URL/file.key > file.keyinfo
|
|
|
|
echo file.key >> file.keyinfo
|
|
|
|
echo $(openssl rand -hex 16) >> file.keyinfo
|
|
|
|
ffmpeg -f lavfi -re -i testsrc -c:v h264 -hls_flags delete_segments \
|
|
|
|
-hls_key_info_file file.keyinfo out.m3u8
|
|
|
|
@end example
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item hls_enc @var{bool}
|
2017-04-14 17:30:29 +02:00
|
|
|
Enable (1) or disable (0) the AES128 encryption.
|
|
|
|
When enabled every segment generated is encrypted and the encryption key
|
|
|
|
is saved as @var{playlist name}.key.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item hls_enc_key @var{key}
|
|
|
|
Specify a 16-octet key to encrypt the segments, by default it is randomly
|
|
|
|
generated.
|
2017-04-14 17:30:29 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item hls_enc_key_url @var{keyurl}
|
2017-04-14 17:30:29 +02:00
|
|
|
If set, @var{keyurl} is prepended instead of @var{baseurl} to the key filename
|
|
|
|
in the playlist.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item hls_enc_iv @var{iv}
|
|
|
|
Specify the 16-octet initialization vector for every segment instead of the
|
|
|
|
autogenerated ones.
|
2017-01-03 16:57:51 +02:00
|
|
|
|
2017-07-03 14:20:44 +02:00
|
|
|
@item hls_segment_type @var{flags}
|
|
|
|
Possible values:
|
|
|
|
|
|
|
|
@table @samp
|
|
|
|
@item mpegts
|
2018-10-30 21:22:55 +02:00
|
|
|
Output segment files in MPEG-2 Transport Stream format. This is
|
|
|
|
compatible with all HLS versions.
|
2017-07-03 14:20:44 +02:00
|
|
|
|
|
|
|
@item fmp4
|
2018-10-30 21:22:55 +02:00
|
|
|
Output segment files in fragmented MP4 format, similar to MPEG-DASH.
|
|
|
|
fmp4 files may be used in HLS version 7 and above.
|
2017-07-03 14:20:44 +02:00
|
|
|
@end table
|
|
|
|
|
|
|
|
@item hls_fmp4_init_filename @var{filename}
|
2024-03-29 13:30:57 +02:00
|
|
|
Set filename for the fragment files header file, default filename is @file{init.mp4}.
|
|
|
|
|
|
|
|
When @option{strftime} is enabled, @var{filename} is expanded to the segment filename with localtime.
|
2017-07-03 14:20:44 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
For example:
|
2020-10-27 13:28:59 +02:00
|
|
|
@example
|
2024-03-29 13:30:57 +02:00
|
|
|
ffmpeg -i in.nut -hls_segment_type fmp4 -strftime 1 -hls_fmp4_init_filename "%s_init.mp4" out.m3u8
|
2020-10-27 13:28:59 +02:00
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
will produce init like this @file{1602678741_init.mp4}.
|
2020-10-27 13:28:59 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item hls_fmp4_init_resend @var{bool}
|
2020-04-07 11:30:18 +02:00
|
|
|
Resend init file after m3u8 file refresh every time, default is @var{0}.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
When @option{var_stream_map} is set with two or more variant streams, the
|
2018-01-02 04:46:17 +02:00
|
|
|
@var{filename} pattern must contain the string "%v", this string specifies
|
|
|
|
the position of variant stream index in the generated init file names.
|
2018-01-02 04:46:48 +02:00
|
|
|
The string "%v" may be present in the filename or in the last directory name
|
|
|
|
containing the file. If the string is present in the directory name, then
|
|
|
|
sub-directories are created after expanding the directory name pattern. This
|
|
|
|
enables creation of init files corresponding to different variant streams in
|
|
|
|
subdirectories.
|
2018-01-02 04:46:17 +02:00
|
|
|
|
2017-01-03 16:57:51 +02:00
|
|
|
@item hls_flags @var{flags}
|
|
|
|
Possible values:
|
|
|
|
|
|
|
|
@table @samp
|
|
|
|
@item single_file
|
2014-09-15 16:26:57 +03:00
|
|
|
If this flag is set, the muxer will store all segments in a single MPEG-TS
|
|
|
|
file, and will use byte ranges in the playlist. HLS playlists generated with
|
|
|
|
this way will have the version number 4.
|
2024-03-29 13:30:57 +02:00
|
|
|
|
2014-09-15 16:26:57 +03:00
|
|
|
For example:
|
|
|
|
@example
|
|
|
|
ffmpeg -i in.nut -hls_flags single_file out.m3u8
|
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
will produce the playlist, @file{out.m3u8}, and a single segment file,
|
2014-09-15 16:26:57 +03:00
|
|
|
@file{out.ts}.
|
2014-12-08 18:25:05 +02:00
|
|
|
|
2017-01-03 16:57:51 +02:00
|
|
|
@item delete_segments
|
2014-12-08 18:25:05 +02:00
|
|
|
Segment files removed from the playlist are deleted after a period of time
|
|
|
|
equal to the duration of the segment plus the duration of the playlist.
|
2015-12-17 05:16:45 +02:00
|
|
|
|
2017-01-03 16:57:51 +02:00
|
|
|
@item append_list
|
2016-08-21 06:55:45 +02:00
|
|
|
Append new segments into the end of old segment list,
|
|
|
|
and remove the @code{#EXT-X-ENDLIST} from the old segment list.
|
|
|
|
|
2017-01-03 16:57:51 +02:00
|
|
|
@item round_durations
|
2016-07-18 14:05:35 +02:00
|
|
|
Round the duration info in the playlist file segment info to integer
|
|
|
|
values, instead of using floating point.
|
2022-06-29 05:43:11 +02:00
|
|
|
If there are no other features requiring higher HLS versions be used,
|
2024-03-29 13:30:57 +02:00
|
|
|
then this will allow @command{ffmpeg} to output a HLS version 2 m3u8.
|
2016-07-18 14:05:35 +02:00
|
|
|
|
2017-01-05 14:21:13 +02:00
|
|
|
@item discont_start
|
2016-07-18 14:05:35 +02:00
|
|
|
Add the @code{#EXT-X-DISCONTINUITY} tag to the playlist, before the
|
|
|
|
first segment's information.
|
|
|
|
|
2017-01-03 16:57:51 +02:00
|
|
|
@item omit_endlist
|
2016-07-18 14:05:35 +02:00
|
|
|
Do not append the @code{EXT-X-ENDLIST} tag at the end of the playlist.
|
|
|
|
|
2017-08-06 09:10:35 +02:00
|
|
|
@item periodic_rekey
|
|
|
|
The file specified by @code{hls_key_info_file} will be checked periodically and
|
|
|
|
detect updates to the encryption info. Be sure to replace this file atomically,
|
|
|
|
including the file containing the AES encryption key.
|
|
|
|
|
2017-11-24 00:57:36 +02:00
|
|
|
@item independent_segments
|
2024-03-29 13:30:57 +02:00
|
|
|
Add the @code{#EXT-X-INDEPENDENT-SEGMENTS} tag to playlists that has video segments
|
|
|
|
and when all the segments of that playlist are guaranteed to start with a key frame.
|
2017-11-24 00:57:36 +02:00
|
|
|
|
2019-06-02 16:03:17 +02:00
|
|
|
@item iframes_only
|
2024-03-29 13:30:57 +02:00
|
|
|
Add the @code{#EXT-X-I-FRAMES-ONLY} tag to playlists that has video segments
|
2019-06-02 16:03:17 +02:00
|
|
|
and can play only I-frames in the @code{#EXT-X-BYTERANGE} mode.
|
|
|
|
|
2017-01-03 16:57:51 +02:00
|
|
|
@item split_by_time
|
2024-03-29 13:30:57 +02:00
|
|
|
Allow segments to start on frames other than key frames. This improves
|
|
|
|
behavior on some players when the time between key frames is inconsistent,
|
2016-07-18 14:10:25 +02:00
|
|
|
but may make things worse on others, and can cause some oddities during
|
2024-03-29 13:30:57 +02:00
|
|
|
seeking. This flag should be used with the @option{hls_time} option.
|
2016-07-07 00:51:20 +02:00
|
|
|
|
2017-01-03 16:57:51 +02:00
|
|
|
@item program_date_time
|
2016-09-07 21:34:44 +02:00
|
|
|
Generate @code{EXT-X-PROGRAM-DATE-TIME} tags.
|
|
|
|
|
2017-01-03 16:57:51 +02:00
|
|
|
@item second_level_segment_index
|
2024-03-29 13:30:57 +02:00
|
|
|
Make it possible to use segment indexes as %%d in the
|
|
|
|
@option{hls_segment_filename} option expression besides date/time values when
|
|
|
|
@option{strftime} option is on. To get fixed width numbers with trailing zeroes, %%0xd format
|
|
|
|
is available where x is the required width.
|
2017-01-03 16:57:51 +02:00
|
|
|
|
|
|
|
@item second_level_segment_size
|
2024-03-29 13:30:57 +02:00
|
|
|
Make it possible to use segment sizes (counted in bytes) as %%s in
|
|
|
|
@option{hls_segment_filename} option expression besides date/time values when
|
|
|
|
strftime is on. To get fixed width numbers with trailing zeroes, %%0xs format
|
|
|
|
is available where x is the required width.
|
2017-01-03 16:57:51 +02:00
|
|
|
|
|
|
|
@item second_level_segment_duration
|
2024-03-29 13:30:57 +02:00
|
|
|
Make it possible to use segment duration (calculated in microseconds) as %%t in
|
|
|
|
@option{hls_segment_filename} option expression besides date/time values when
|
|
|
|
strftime is on. To get fixed width numbers with trailing zeroes, %%0xt format
|
|
|
|
is available where x is the required width.
|
2017-01-03 16:57:51 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
For example:
|
2017-01-03 16:57:51 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -i sample.mpeg \
|
|
|
|
-f hls -hls_time 3 -hls_list_size 5 \
|
|
|
|
-hls_flags second_level_segment_index+second_level_segment_size+second_level_segment_duration \
|
2018-09-03 05:10:35 +02:00
|
|
|
-strftime 1 -strftime_mkdir 1 -hls_segment_filename "segment_%Y%m%d%H%M%S_%%04d_%%08s_%%013t.ts" stream.m3u8
|
2017-01-03 16:57:51 +02:00
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
will produce segments like this:
|
2017-01-03 16:57:51 +02:00
|
|
|
@file{segment_20170102194334_0003_00122200_0000003000000.ts}, @file{segment_20170102194334_0004_00120072_0000003000000.ts} etc.
|
|
|
|
|
2017-03-11 15:11:38 +02:00
|
|
|
@item temp_file
|
2024-03-29 13:30:57 +02:00
|
|
|
Write segment data to @file{filename.tmp} and rename to filename only once the
|
|
|
|
segment is complete.
|
|
|
|
|
|
|
|
A webserver serving up segments can be configured to reject requests to *.tmp to
|
|
|
|
prevent access to in-progress segments before they have been added to the m3u8
|
|
|
|
playlist.
|
|
|
|
|
|
|
|
This flag also affects how m3u8 playlist files are created. If this flag is set,
|
|
|
|
all playlist files will be written into a temporary file and renamed after they
|
|
|
|
are complete, similarly as segments are handled. But playlists with @code{file}
|
|
|
|
protocol and with @option{hls_playlist_type} type other than @samp{vod} are
|
|
|
|
always written into a temporary file regardless of this flag.
|
|
|
|
|
|
|
|
Master playlist files specified with @option{master_pl_name}, if any, with
|
|
|
|
@code{file} protocol, are always written into temporary file regardless of this
|
|
|
|
flag if @option{master_pl_publish_rate} value is other than zero.
|
2017-01-03 16:57:51 +02:00
|
|
|
@end table
|
2016-12-27 04:40:35 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item hls_playlist_type @var{type}
|
|
|
|
If type is @samp{event}, emit @code{#EXT-X-PLAYLIST-TYPE:EVENT} in the m3u8
|
|
|
|
header. This forces @option{hls_list_size} to 0; the playlist can only be
|
|
|
|
appended to.
|
2015-12-17 05:16:45 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
If type is @samp{vod}, emit @code{#EXT-X-PLAYLIST-TYPE:VOD} in the m3u8
|
|
|
|
header. This forces @option{hls_list_size} to 0; the playlist must not change.
|
2016-07-13 09:15:06 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item method @var{method}
|
2016-07-13 09:15:06 +02:00
|
|
|
Use the given HTTP method to create the hls files.
|
2024-03-29 13:30:57 +02:00
|
|
|
|
|
|
|
For example:
|
2016-07-13 09:15:06 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -re -i in.ts -f hls -method PUT http://example.com/live/out.m3u8
|
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
will upload all the mpegts segment files to the HTTP server using the HTTP PUT
|
|
|
|
method, and update the m3u8 files every @code{refresh} times using the same
|
|
|
|
method. Note that the HTTP server must support the given method for uploading
|
2016-07-13 09:15:06 +02:00
|
|
|
files.
|
2017-09-05 17:30:52 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item http_user_agent @var{agent}
|
2017-09-05 17:30:52 +02:00
|
|
|
Override User-Agent field in HTTP header. Applicable only for HTTP output.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item var_stream_map @var{stream_map}
|
|
|
|
Specify a map string defining how to group the audio, video and subtitle streams
|
|
|
|
into different variant streams. The variant stream groups are separated by
|
|
|
|
space.
|
|
|
|
|
2017-11-20 04:02:11 +02:00
|
|
|
Expected string format is like this "a:0,v:0 a:1,v:1 ....". Here a:, v:, s: are
|
|
|
|
the keys to specify audio, video and subtitle streams respectively.
|
|
|
|
Allowed values are 0 to 9 (limited just based on practical usage).
|
|
|
|
|
2018-01-02 04:46:17 +02:00
|
|
|
When there are two or more variant streams, the output filename pattern must
|
2024-03-29 13:30:57 +02:00
|
|
|
contain the string "%v": this string specifies the position of variant stream
|
2018-01-02 04:46:48 +02:00
|
|
|
index in the output media playlist filenames. The string "%v" may be present in
|
|
|
|
the filename or in the last directory name containing the file. If the string is
|
|
|
|
present in the directory name, then sub-directories are created after expanding
|
|
|
|
the directory name pattern. This enables creation of variant streams in
|
|
|
|
subdirectories.
|
2018-01-02 04:46:17 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
A few examples follow.
|
|
|
|
|
|
|
|
@itemize
|
|
|
|
@item
|
|
|
|
Create two hls variant streams. The first variant stream will contain video
|
|
|
|
stream of bitrate 1000k and audio stream of bitrate 64k and the second variant
|
|
|
|
stream will contain video stream of bitrate 256k and audio stream of bitrate
|
|
|
|
32k. Here, two media playlist with file names @file{out_0.m3u8} and
|
|
|
|
@file{out_1.m3u8} will be created.
|
2017-11-20 04:02:11 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -re -i in.ts -b:v:0 1000k -b:v:1 256k -b:a:0 64k -b:a:1 32k \
|
|
|
|
-map 0:v -map 0:a -map 0:v -map 0:a -f hls -var_stream_map "v:0,a:0 v:1,a:1" \
|
2018-01-02 04:46:17 +02:00
|
|
|
http://example.com/live/out_%v.m3u8
|
2017-11-20 04:02:11 +02:00
|
|
|
@end example
|
2019-06-20 05:08:04 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item
|
|
|
|
If you want something meaningful text instead of indexes in result names, you
|
|
|
|
may specify names for each or some of the variants. The following example will
|
|
|
|
create two hls variant streams as in the previous one. But here, the two media
|
|
|
|
playlist with file names @file{out_my_hd.m3u8} and @file{out_my_sd.m3u8} will be
|
|
|
|
created.
|
2019-06-20 05:08:04 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -re -i in.ts -b:v:0 1000k -b:v:1 256k -b:a:0 64k -b:a:1 32k \
|
|
|
|
-map 0:v -map 0:a -map 0:v -map 0:a -f hls -var_stream_map "v:0,a:0,name:my_hd v:1,a:1,name:my_sd" \
|
|
|
|
http://example.com/live/out_%v.m3u8
|
|
|
|
@end example
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item
|
|
|
|
Create three hls variant streams. The first variant stream will be a video only
|
|
|
|
stream with video bitrate 1000k, the second variant stream will be an audio only
|
|
|
|
stream with bitrate 64k and the third variant stream will be a video only stream
|
|
|
|
with bitrate 256k. Here, three media playlist with file names @file{out_0.m3u8},
|
|
|
|
@file{out_1.m3u8} and @file{out_2.m3u8} will be created.
|
2017-11-20 04:02:11 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -re -i in.ts -b:v:0 1000k -b:v:1 256k -b:a:0 64k \
|
|
|
|
-map 0:v -map 0:a -map 0:v -f hls -var_stream_map "v:0 a:0 v:1" \
|
2018-01-02 04:46:17 +02:00
|
|
|
http://example.com/live/out_%v.m3u8
|
2017-11-20 04:02:11 +02:00
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
|
|
|
|
@item
|
|
|
|
Create the variant streams in subdirectories. Here, the first media playlist is
|
|
|
|
created at @file{http://example.com/live/vs_0/out.m3u8} and the second one at
|
|
|
|
@file{http://example.com/live/vs_1/out.m3u8}.
|
2017-12-23 07:42:00 +02:00
|
|
|
@example
|
2018-01-02 04:46:48 +02:00
|
|
|
ffmpeg -re -i in.ts -b:v:0 1000k -b:v:1 256k -b:a:0 64k -b:a:1 32k \
|
|
|
|
-map 0:v -map 0:a -map 0:v -map 0:a -f hls -var_stream_map "v:0,a:0 v:1,a:1" \
|
|
|
|
http://example.com/live/vs_%v/out.m3u8
|
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
|
|
|
|
@item
|
|
|
|
Create two audio only and two video only variant streams. In addition to the
|
|
|
|
@code{#EXT-X-STREAM-INF} tag for each variant stream in the master playlist, the
|
|
|
|
@code{#EXT-X-MEDIA} tag is also added for the two audio only variant streams and
|
|
|
|
they are mapped to the two video only variant streams with audio group names
|
|
|
|
'aud_low' and 'aud_high'.
|
|
|
|
By default, a single hls variant containing all the encoded streams is created.
|
2018-01-02 04:46:48 +02:00
|
|
|
@example
|
2017-12-23 07:42:00 +02:00
|
|
|
ffmpeg -re -i in.ts -b:a:0 32k -b:a:1 64k -b:v:0 1000k -b:v:1 3000k \
|
|
|
|
-map 0:a -map 0:a -map 0:v -map 0:v -f hls \
|
|
|
|
-var_stream_map "a:0,agroup:aud_low a:1,agroup:aud_high v:0,agroup:aud_low v:1,agroup:aud_high" \
|
|
|
|
-master_pl_name master.m3u8 \
|
2018-01-02 04:46:17 +02:00
|
|
|
http://example.com/live/out_%v.m3u8
|
2017-12-23 07:42:00 +02:00
|
|
|
@end example
|
2017-11-20 04:02:11 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item
|
2017-11-20 04:02:11 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
Create two audio only and one video only variant streams. In addition to the
|
|
|
|
@code{#EXT-X-STREAM-INF} tag for each variant stream in the master playlist, the
|
|
|
|
@code{#EXT-X-MEDIA} tag is also added for the two audio only variant streams and
|
|
|
|
they are mapped to the one video only variant streams with audio group name
|
|
|
|
'aud_low', and the audio group have default stat is NO or YES.
|
|
|
|
By default, a single hls variant containing all the encoded streams is created.
|
avformat/hlsenc: add var_stream_map DEFAULT field status parameter
use a:0,agroup:aud_low,default:Yes a:1,agroup:aud_low,
a:2,agroup:aud_high,default:Yes a:3, agroup:aud_high,
v:0,agroup:aud_low v:1,agroup:aud_high
create master m3u8 list.
result:
EXTM3U
EXT-X-VERSION:3
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_low",NAME="audio_0",DEFAULT=YES,URI="out_0.m3u8"
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_low",NAME="audio_1",DEFAULT=NO,URI="out_1.m3u8"
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_high",NAME="audio_2",DEFAULT=YES,URI="out_2.m3u8"
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_high",NAME="audio_3",DEFAULT=NO,URI="out_3.m3u8"
EXT-X-STREAM-INF:BANDWIDTH=1170400,RESOLUTION=640x480,CODECS="avc1.64001e,mp4a.40.2",AUDIO="group_aud_low"
out_4.m3u8
EXT-X-STREAM-INF:BANDWIDTH=3440800,RESOLUTION=640x480,CODECS="avc1.64001e,mp4a.40.2",AUDIO="group_aud_high"
out_5.m3u8
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>
2019-01-23 12:52:02 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -re -i in.ts -b:a:0 32k -b:a:1 64k -b:v:0 1000k \
|
|
|
|
-map 0:a -map 0:a -map 0:v -f hls \
|
|
|
|
-var_stream_map "a:0,agroup:aud_low,default:yes a:1,agroup:aud_low v:0,agroup:aud_low" \
|
|
|
|
-master_pl_name master.m3u8 \
|
|
|
|
http://example.com/live/out_%v.m3u8
|
|
|
|
@end example
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item
|
|
|
|
Create two audio only and one video only variant streams. In addition to the
|
|
|
|
@code{#EXT-X-STREAM-INF} tag for each variant stream in the master playlist, the
|
|
|
|
@code{#EXT-X-MEDIA} tag is also added for the two audio only variant streams and
|
|
|
|
they are mapped to the one video only variant streams with audio group name
|
|
|
|
'aud_low', and the audio group have default stat is NO or YES, and one audio
|
|
|
|
have and language is named ENG, the other audio language is named CHN. By
|
|
|
|
default, a single hls variant containing all the encoded streams is created.
|
avformat/hlsenc: add var_stream_map LANGUAGE field string parameter
use a:0,agroup:aud_low,default:Yes,language:CHN a:1,agroup:aud_low,language:ENG
a:2,agroup:aud_high,default:YesYes,language:CHN a:3,agroup:aud_high,language:ENG
v:0,agroup:aud_low v:1,agroup:aud_high
create master m3u8 list.
result:
EXTM3U
EXT-X-VERSION:3
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_low",NAME="audio_0",DEFAULT=YES,LANGUAGE="CHN",URI="out_0.m3u8"
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_low",NAME="audio_1",DEFAULT=NO,LANGUAGE="ENG",URI="out_1.m3u8"
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_high",NAME="audio_2",DEFAULT=YES,LANGUAGE="CHN",URI="out_2.m3u8"
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_high",NAME="audio_3",DEFAULT=NO,LANGUAGE="ENG",URI="out_3.m3u8"
EXT-X-STREAM-INF:BANDWIDTH=1170400,RESOLUTION=640x480,CODECS="avc1.64001e,mp4a.40.2",AUDIO="group_aud_low"
out_4.m3u8
EXT-X-STREAM-INF:BANDWIDTH=3440800,RESOLUTION=640x480,CODECS="avc1.64001e,mp4a.40.2",AUDIO="group_aud_high"
out_5.m3u8
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>
2019-01-23 13:19:49 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -re -i in.ts -b:a:0 32k -b:a:1 64k -b:v:0 1000k \
|
|
|
|
-map 0:a -map 0:a -map 0:v -f hls \
|
2019-06-02 15:53:11 +02:00
|
|
|
-var_stream_map "a:0,agroup:aud_low,default:yes,language:ENG a:1,agroup:aud_low,language:CHN v:0,agroup:aud_low" \
|
avformat/hlsenc: add var_stream_map LANGUAGE field string parameter
use a:0,agroup:aud_low,default:Yes,language:CHN a:1,agroup:aud_low,language:ENG
a:2,agroup:aud_high,default:YesYes,language:CHN a:3,agroup:aud_high,language:ENG
v:0,agroup:aud_low v:1,agroup:aud_high
create master m3u8 list.
result:
EXTM3U
EXT-X-VERSION:3
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_low",NAME="audio_0",DEFAULT=YES,LANGUAGE="CHN",URI="out_0.m3u8"
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_low",NAME="audio_1",DEFAULT=NO,LANGUAGE="ENG",URI="out_1.m3u8"
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_high",NAME="audio_2",DEFAULT=YES,LANGUAGE="CHN",URI="out_2.m3u8"
EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_aud_high",NAME="audio_3",DEFAULT=NO,LANGUAGE="ENG",URI="out_3.m3u8"
EXT-X-STREAM-INF:BANDWIDTH=1170400,RESOLUTION=640x480,CODECS="avc1.64001e,mp4a.40.2",AUDIO="group_aud_low"
out_4.m3u8
EXT-X-STREAM-INF:BANDWIDTH=3440800,RESOLUTION=640x480,CODECS="avc1.64001e,mp4a.40.2",AUDIO="group_aud_high"
out_5.m3u8
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>
2019-01-23 13:19:49 +02:00
|
|
|
-master_pl_name master.m3u8 \
|
|
|
|
http://example.com/live/out_%v.m3u8
|
|
|
|
@end example
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item
|
|
|
|
Create a single variant stream. Add the @code{#EXT-X-MEDIA} tag with
|
|
|
|
@code{TYPE=SUBTITLES} in the master playlist with webvtt subtitle group name
|
|
|
|
'subtitle'. Make sure the input file has one text subtitle stream at least.
|
avformat: add subtitle support in master playlist m3u8
Test with the following command for the webvtt subtitle:
$ ./ffmpeg -y -i input_with_subtitle.mkv \
-b:v:0 5250k -c:v h264 -pix_fmt yuv420p -profile:v main -level 4.1 \
-b:a:0 256k \
-c:s webvtt -c:a mp2 -ar 48000 -ac 2 -map 0:v -map 0:a:0 -map 0:s:0 \
-f hls -var_stream_map "v:0,a:0,s:0,sgroup:subtitle" \
-master_pl_name master.m3u8 -t 300 -hls_time 10 -hls_init_time 4 -hls_list_size \
10 -master_pl_publish_rate 10 -hls_flags \
delete_segments+discont_start+split_by_time ./tmp/video.m3u8
Check the master m3u8:
$ cat tmp/master.m3u8
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subtitle",NAME="subtitle_0",DEFAULT=YES,URI="video_vtt.m3u8"
#EXT-X-STREAM-INF:BANDWIDTH=6056600,RESOLUTION=1280x720,CODECS="avc1.4d4829,mp4a.40.33",SUBTITLES="subtitle"
video.m3u8
Check the result by convert to mkv:
$ ./ffmpeg -strict experimental -i ./tmp/master.m3u8 -c:v copy -c:a mp2 -c:s srt ./test.mkv
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
2020-03-29 13:13:44 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -y -i input_with_subtitle.mkv \
|
|
|
|
-b:v:0 5250k -c:v h264 -pix_fmt yuv420p -profile:v main -level 4.1 \
|
|
|
|
-b:a:0 256k \
|
|
|
|
-c:s webvtt -c:a mp2 -ar 48000 -ac 2 -map 0:v -map 0:a:0 -map 0:s:0 \
|
|
|
|
-f hls -var_stream_map "v:0,a:0,s:0,sgroup:subtitle" \
|
|
|
|
-master_pl_name master.m3u8 -t 300 -hls_time 10 -hls_init_time 4 -hls_list_size \
|
2024-03-29 13:30:57 +02:00
|
|
|
10 -master_pl_publish_rate 10 -hls_flags \
|
avformat: add subtitle support in master playlist m3u8
Test with the following command for the webvtt subtitle:
$ ./ffmpeg -y -i input_with_subtitle.mkv \
-b:v:0 5250k -c:v h264 -pix_fmt yuv420p -profile:v main -level 4.1 \
-b:a:0 256k \
-c:s webvtt -c:a mp2 -ar 48000 -ac 2 -map 0:v -map 0:a:0 -map 0:s:0 \
-f hls -var_stream_map "v:0,a:0,s:0,sgroup:subtitle" \
-master_pl_name master.m3u8 -t 300 -hls_time 10 -hls_init_time 4 -hls_list_size \
10 -master_pl_publish_rate 10 -hls_flags \
delete_segments+discont_start+split_by_time ./tmp/video.m3u8
Check the master m3u8:
$ cat tmp/master.m3u8
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subtitle",NAME="subtitle_0",DEFAULT=YES,URI="video_vtt.m3u8"
#EXT-X-STREAM-INF:BANDWIDTH=6056600,RESOLUTION=1280x720,CODECS="avc1.4d4829,mp4a.40.33",SUBTITLES="subtitle"
video.m3u8
Check the result by convert to mkv:
$ ./ffmpeg -strict experimental -i ./tmp/master.m3u8 -c:v copy -c:a mp2 -c:s srt ./test.mkv
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
2020-03-29 13:13:44 +02:00
|
|
|
delete_segments+discont_start+split_by_time ./tmp/video.m3u8
|
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
@end itemize
|
avformat: add subtitle support in master playlist m3u8
Test with the following command for the webvtt subtitle:
$ ./ffmpeg -y -i input_with_subtitle.mkv \
-b:v:0 5250k -c:v h264 -pix_fmt yuv420p -profile:v main -level 4.1 \
-b:a:0 256k \
-c:s webvtt -c:a mp2 -ar 48000 -ac 2 -map 0:v -map 0:a:0 -map 0:s:0 \
-f hls -var_stream_map "v:0,a:0,s:0,sgroup:subtitle" \
-master_pl_name master.m3u8 -t 300 -hls_time 10 -hls_init_time 4 -hls_list_size \
10 -master_pl_publish_rate 10 -hls_flags \
delete_segments+discont_start+split_by_time ./tmp/video.m3u8
Check the master m3u8:
$ cat tmp/master.m3u8
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subtitle",NAME="subtitle_0",DEFAULT=YES,URI="video_vtt.m3u8"
#EXT-X-STREAM-INF:BANDWIDTH=6056600,RESOLUTION=1280x720,CODECS="avc1.4d4829,mp4a.40.33",SUBTITLES="subtitle"
video.m3u8
Check the result by convert to mkv:
$ ./ffmpeg -strict experimental -i ./tmp/master.m3u8 -c:v copy -c:a mp2 -c:s srt ./test.mkv
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
2020-03-29 13:13:44 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item cc_stream_map @var{cc_stream_map}
|
2018-01-24 05:42:57 +02:00
|
|
|
Map string which specifies different closed captions groups and their
|
|
|
|
attributes. The closed captions stream groups are separated by space.
|
2024-03-29 13:30:57 +02:00
|
|
|
|
2018-01-24 05:42:57 +02:00
|
|
|
Expected string format is like this
|
|
|
|
"ccgroup:<group name>,instreamid:<INSTREAM-ID>,language:<language code> ....".
|
|
|
|
'ccgroup' and 'instreamid' are mandatory attributes. 'language' is an optional
|
|
|
|
attribute.
|
2024-03-29 13:30:57 +02:00
|
|
|
|
2018-01-24 05:42:57 +02:00
|
|
|
The closed captions groups configured using this option are mapped to different
|
|
|
|
variant streams by providing the same 'ccgroup' name in the
|
2024-03-29 13:30:57 +02:00
|
|
|
@option{var_stream_map} string.
|
2018-01-24 05:42:57 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
For example:
|
2018-01-24 05:42:57 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -re -i in.ts -b:v:0 1000k -b:v:1 256k -b:a:0 64k -b:a:1 32k \
|
2024-03-29 13:30:57 +02:00
|
|
|
-a53cc:0 1 -a53cc:1 1 \
|
2018-01-24 05:42:57 +02:00
|
|
|
-map 0:v -map 0:a -map 0:v -map 0:a -f hls \
|
|
|
|
-cc_stream_map "ccgroup:cc,instreamid:CC1,language:en ccgroup:cc,instreamid:CC2,language:sp" \
|
|
|
|
-var_stream_map "v:0,a:0,ccgroup:cc v:1,a:1,ccgroup:cc" \
|
|
|
|
-master_pl_name master.m3u8 \
|
|
|
|
http://example.com/live/out_%v.m3u8
|
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
will add two @code{#EXT-X-MEDIA} tags with @code{TYPE=CLOSED-CAPTIONS} in the
|
|
|
|
master playlist for the INSTREAM-IDs 'CC1' and 'CC2'. Also, it will add
|
2018-01-24 05:42:57 +02:00
|
|
|
@code{CLOSED-CAPTIONS} attribute with group name 'cc' for the two output variant
|
|
|
|
streams.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
If @option{var_stream_map} is not set, then the first available ccgroup in
|
|
|
|
@option{cc_stream_map} is mapped to the output variant stream.
|
|
|
|
|
|
|
|
For example:
|
|
|
|
@example
|
|
|
|
ffmpeg -re -i in.ts -b:v 1000k -b:a 64k -a53cc 1 -f hls \
|
|
|
|
-cc_stream_map "ccgroup:cc,instreamid:CC1,language:en" \
|
|
|
|
-master_pl_name master.m3u8 \
|
|
|
|
http://example.com/live/out.m3u8
|
|
|
|
@end example
|
|
|
|
this will add @code{#EXT-X-MEDIA} tag with @code{TYPE=CLOSED-CAPTIONS} in the
|
|
|
|
master playlist with group name 'cc', language 'en' (english) and INSTREAM-ID
|
|
|
|
'CC1'. Also, it will add @code{CLOSED-CAPTIONS} attribute with group name 'cc'
|
|
|
|
for the output variant stream.
|
|
|
|
|
|
|
|
@item master_pl_name @var{name}
|
2017-11-20 04:04:34 +02:00
|
|
|
Create HLS master playlist with the given name.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
For example:
|
2017-11-20 04:04:34 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -re -i in.ts -f hls -master_pl_name master.m3u8 http://example.com/live/out.m3u8
|
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
creates an HLS master playlist with name @file{master.m3u8} which is published
|
|
|
|
at @url{http://example.com/live/}.
|
2017-11-20 04:04:34 +02:00
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item master_pl_publish_rate @var{count}
|
2017-11-20 04:04:34 +02:00
|
|
|
Publish master play list repeatedly every after specified number of segment intervals.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
For example:
|
2017-11-20 04:04:34 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -re -i in.ts -f hls -master_pl_name master.m3u8 \
|
|
|
|
-hls_time 2 -master_pl_publish_rate 30 http://example.com/live/out.m3u8
|
|
|
|
@end example
|
2024-03-29 13:30:57 +02:00
|
|
|
creates an HLS master playlist with name @file{master.m3u8} and keeps
|
2017-11-20 04:04:34 +02:00
|
|
|
publishing it repeatedly every after 30 segments i.e. every after 60s.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item http_persistent @var{bool}
|
2017-11-29 08:33:07 +02:00
|
|
|
Use persistent HTTP connections. Applicable only for HTTP output.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item timeout @var{timeout}
|
2018-03-14 13:59:34 +02:00
|
|
|
Set timeout for socket I/O operations. Applicable only for HTTP output.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item ignore_io_errors @var{bool}
|
2018-12-10 08:19:23 +02:00
|
|
|
Ignore IO errors during open, write and delete. Useful for long-duration runs with network output.
|
|
|
|
|
2024-03-29 13:30:57 +02:00
|
|
|
@item headers @var{headers}
|
2019-06-21 15:26:20 +02:00
|
|
|
Set custom HTTP headers, can override built in default headers. Applicable only for HTTP output.
|
2012-10-26 17:36:56 +03:00
|
|
|
@end table
|
|
|
|
|
2024-03-29 13:47:25 +02:00
|
|
|
@section iamf
|
|
|
|
Immersive Audio Model and Formats (IAMF) muxer.
|
|
|
|
|
|
|
|
IAMF is used to provide immersive audio content for presentation on a wide range
|
|
|
|
of devices in both streaming and offline applications. These applications
|
|
|
|
include internet audio streaming, multicasting/broadcasting services, file
|
|
|
|
download, gaming, communication, virtual and augmented reality, and others. In
|
|
|
|
these applications, audio may be played back on a wide range of devices, e.g.,
|
|
|
|
headphones, mobile phones, tablets, TVs, sound bars, home theater systems, and
|
|
|
|
big screens.
|
|
|
|
|
|
|
|
This format was promoted and desgined by Alliance for Open Media.
|
|
|
|
|
|
|
|
For more information about this format, see @url{https://aomedia.org/iamf/}.
|
|
|
|
|
2012-08-12 19:29:36 +03:00
|
|
|
@anchor{ico}
|
|
|
|
@section ico
|
|
|
|
|
|
|
|
ICO file muxer.
|
|
|
|
|
|
|
|
Microsoft's icon file format (ICO) has some strict limitations that should be noted:
|
|
|
|
|
|
|
|
@itemize
|
|
|
|
@item
|
|
|
|
Size cannot exceed 256 pixels in any dimension
|
|
|
|
|
|
|
|
@item
|
|
|
|
Only BMP and PNG images can be stored
|
|
|
|
|
|
|
|
@item
|
|
|
|
If a BMP image is used, it must be one of the following pixel formats:
|
|
|
|
@example
|
|
|
|
BMP Bit Depth FFmpeg Pixel Format
|
|
|
|
1bit pal8
|
|
|
|
4bit pal8
|
|
|
|
8bit pal8
|
|
|
|
16bit rgb555le
|
|
|
|
24bit bgr24
|
|
|
|
32bit bgra
|
|
|
|
@end example
|
|
|
|
|
|
|
|
@item
|
|
|
|
If a BMP image is used, it must use the BITMAPINFOHEADER DIB header
|
|
|
|
|
|
|
|
@item
|
|
|
|
If a PNG image is used, it must use the rgba pixel format
|
|
|
|
@end itemize
|
|
|
|
|
2024-03-29 14:30:43 +02:00
|
|
|
@section ilbc
|
|
|
|
Internet Low Bitrate Codec (iLBC) raw muxer.
|
|
|
|
|
|
|
|
It accepts a single @samp{ilbc} audio stream.
|
|
|
|
|
2011-10-03 00:05:29 +03:00
|
|
|
@anchor{image2}
|
2024-03-29 15:03:39 +02:00
|
|
|
@section image2, image2pipe
|
2011-01-26 23:53:00 +02:00
|
|
|
Image file muxer.
|
|
|
|
|
2024-03-29 15:03:39 +02:00
|
|
|
The @samp{image2} muxer writes video frames to image files.
|
2011-01-26 23:53:00 +02:00
|
|
|
|
2011-02-03 01:49:07 +02:00
|
|
|
The output filenames are specified by a pattern, which can be used to
|
|
|
|
produce sequentially numbered series of files.
|
|
|
|
The pattern may contain the string "%d" or "%0@var{N}d", this string
|
2011-01-26 23:53:00 +02:00
|
|
|
specifies the position of the characters representing a numbering in
|
2011-02-03 01:49:07 +02:00
|
|
|
the filenames. If the form "%0@var{N}d" is used, the string
|
2011-01-26 23:53:00 +02:00
|
|
|
representing the number in each filename is 0-padded to @var{N}
|
|
|
|
digits. The literal character '%' can be specified in the pattern with
|
|
|
|
the string "%%".
|
|
|
|
|
|
|
|
If the pattern contains "%d" or "%0@var{N}d", the first filename of
|
|
|
|
the file list specified will contain the number 1, all the following
|
|
|
|
numbers will be sequential.
|
|
|
|
|
|
|
|
The pattern may contain a suffix which is used to automatically
|
|
|
|
determine the format of the image files to write.
|
|
|
|
|
|
|
|
For example the pattern "img-%03d.bmp" will specify a sequence of
|
|
|
|
filenames of the form @file{img-001.bmp}, @file{img-002.bmp}, ...,
|
|
|
|
@file{img-010.bmp}, etc.
|
|
|
|
The pattern "img%%-%d.jpg" will specify a sequence of filenames of the
|
|
|
|
form @file{img%-1.jpg}, @file{img%-2.jpg}, ..., @file{img%-10.jpg},
|
|
|
|
etc.
|
|
|
|
|
2019-12-27 01:34:11 +02:00
|
|
|
The image muxer supports the .Y.U.V image file format. This format is
|
2024-01-04 00:39:28 +02:00
|
|
|
special in that each image frame consists of three files, for
|
2019-12-27 01:34:11 +02:00
|
|
|
each of the YUV420P components. To read or write this image file format,
|
|
|
|
specify the name of the '.Y' file. The muxer will automatically open the
|
|
|
|
'.U' and '.V' files as required.
|
|
|
|
|
2024-03-29 15:03:39 +02:00
|
|
|
The @samp{image2pipe} muxer accepts the same options as the @samp{image2} muxer,
|
|
|
|
but ignores the pattern verification and expansion, as it is supposed to write
|
|
|
|
to the command output rather than to an actual stored file.
|
|
|
|
|
2019-12-27 01:34:11 +02:00
|
|
|
@subsection Options
|
|
|
|
@table @option
|
2024-03-29 14:38:50 +02:00
|
|
|
@item frame_pts @var{bool}
|
|
|
|
If set to 1, expand the filename with the packet PTS (presentation time stamp).
|
2019-12-27 01:34:11 +02:00
|
|
|
Default value is 0.
|
|
|
|
|
2024-03-29 14:38:50 +02:00
|
|
|
@item start_number @var{count}
|
2019-12-27 01:34:11 +02:00
|
|
|
Start the sequence from the specified number. Default value is 1.
|
|
|
|
|
2024-03-29 14:38:50 +02:00
|
|
|
@item update @var{bool}
|
2019-12-27 01:34:11 +02:00
|
|
|
If set to 1, the filename will always be interpreted as just a
|
|
|
|
filename, not a pattern, and the corresponding file will be continuously
|
|
|
|
overwritten with new images. Default value is 0.
|
|
|
|
|
2024-03-29 14:38:50 +02:00
|
|
|
@item strftime @var{bool}
|
2019-12-27 01:34:11 +02:00
|
|
|
If set to 1, expand the filename with date and time information from
|
|
|
|
@code{strftime()}. Default value is 0.
|
2019-12-27 02:19:17 +02:00
|
|
|
|
2024-03-29 14:38:50 +02:00
|
|
|
@item atomic_writing @var{bool}
|
2021-06-30 06:04:09 +02:00
|
|
|
Write output to a temporary file, which is renamed to target filename once
|
|
|
|
writing is completed. Default is disabled.
|
|
|
|
|
2019-12-27 02:19:17 +02:00
|
|
|
@item protocol_opts @var{options_list}
|
|
|
|
Set protocol options as a :-separated list of key=value parameters. Values
|
|
|
|
containing the @code{:} special character must be escaped.
|
2019-12-27 01:34:11 +02:00
|
|
|
@end table
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
@subsection Examples
|
2024-03-29 14:38:50 +02:00
|
|
|
@itemize
|
|
|
|
@item
|
|
|
|
Use @command{ffmpeg} for creating a sequence of files @file{img-001.jpeg},
|
|
|
|
@file{img-002.jpeg}, ..., taking one image every second from the input video:
|
2011-01-26 23:53:00 +02:00
|
|
|
@example
|
2016-10-26 02:33:30 +02:00
|
|
|
ffmpeg -i in.avi -vsync cfr -r 1 -f image2 'img-%03d.jpeg'
|
2011-01-26 23:53:00 +02:00
|
|
|
@end example
|
|
|
|
|
2011-12-10 03:25:15 +03:00
|
|
|
Note that with @command{ffmpeg}, if the format is not specified with the
|
2011-01-26 23:53:00 +02:00
|
|
|
@code{-f} option and the output filename specifies an image file
|
|
|
|
format, the image2 muxer is automatically selected, so the previous
|
|
|
|
command can be written as:
|
|
|
|
@example
|
2016-10-26 02:33:30 +02:00
|
|
|
ffmpeg -i in.avi -vsync cfr -r 1 'img-%03d.jpeg'
|
2011-01-26 23:53:00 +02:00
|
|
|
@end example
|
|
|
|
|
|
|
|
Note also that the pattern must not necessarily contain "%d" or
|
|
|
|
"%0@var{N}d", for example to create a single image file
|
2016-10-26 02:33:30 +02:00
|
|
|
@file{img.jpeg} from the start of the input video you can employ the command:
|
2011-01-26 23:53:00 +02:00
|
|
|
@example
|
2011-12-10 03:25:15 +03:00
|
|
|
ffmpeg -i in.avi -f image2 -frames:v 1 img.jpeg
|
2011-01-26 23:53:00 +02:00
|
|
|
@end example
|
|
|
|
|
2024-03-29 14:38:50 +02:00
|
|
|
@item
|
2014-01-08 07:49:42 +03:00
|
|
|
The @option{strftime} option allows you to expand the filename with
|
|
|
|
date and time information. Check the documentation of
|
|
|
|
the @code{strftime()} function for the syntax.
|
|
|
|
|
2024-03-29 14:38:50 +02:00
|
|
|
To generate image files from the @code{strftime()} "%Y-%m-%d_%H-%M-%S" pattern,
|
|
|
|
the following @command{ffmpeg} command can be used:
|
2014-01-08 07:49:42 +03:00
|
|
|
@example
|
|
|
|
ffmpeg -f v4l2 -r 1 -i /dev/video0 -f image2 -strftime 1 "%Y-%m-%d_%H-%M-%S.jpg"
|
|
|
|
@end example
|
|
|
|
|
2024-03-29 14:38:50 +02:00
|
|
|
@item
|
|
|
|
Set the file name with current frame's PTS:
|
2017-11-13 04:52:01 +02:00
|
|
|
@example
|
2023-05-11 17:52:19 +02:00
|
|
|
ffmpeg -f v4l2 -r 1 -i /dev/video0 -copyts -f image2 -frame_pts true %d.jpg
|
2017-11-13 04:52:01 +02:00
|
|
|
@end example
|
|
|
|
|
2024-03-29 14:38:50 +02:00
|
|
|
@item
|
|
|
|
Publish contents of your desktop directly to a WebDAV server every second:
|
2019-12-27 02:19:17 +02:00
|
|
|
@example
|
|
|
|
ffmpeg -f x11grab -framerate 1 -i :0.0 -q:v 6 -update 1 -protocol_opts method=PUT http://example.com/desktop.jpg
|
|
|
|
@end example
|
2024-03-29 14:38:50 +02:00
|
|
|
@end itemize
|
2019-12-27 02:19:17 +02:00
|
|
|
|
2024-03-29 15:20:24 +02:00
|
|
|
@section ircam
|
|
|
|
Berkeley / IRCAM / CARL Sound Filesystem (BICSF) format muxer.
|
|
|
|
|
|
|
|
The Berkeley/IRCAM/CARL Sound Format, developed in the 1980s, is a result of the
|
|
|
|
merging of several different earlier sound file formats and systems including
|
|
|
|
the csound system developed by Dr Gareth Loy at the Computer Audio Research Lab
|
|
|
|
(CARL) at UC San Diego, the IRCAM sound file system developed by Rob Gross and
|
|
|
|
Dan Timis at the Institut de Recherche et Coordination Acoustique / Musique in
|
|
|
|
Paris and the Berkeley Fast Filesystem.
|
|
|
|
|
|
|
|
It was developed initially as part of the Berkeley/IRCAM/CARL Sound Filesystem,
|
|
|
|
a suite of programs designed to implement a filesystem for audio applications
|
|
|
|
running under Berkeley UNIX. It was particularly popular in academic music
|
|
|
|
research centres, and was used a number of times in the creation of early
|
|
|
|
computer-generated compositions.
|
|
|
|
|
|
|
|
This muxer accepts a single audio stream containing PCM data.
|
|
|
|
|
2024-04-06 12:17:46 +02:00
|
|
|
@section ivf
|
|
|
|
On2 IVF muxer.
|
|
|
|
|
|
|
|
IVF was developed by On2 Technologies (formerly known as Duck
|
|
|
|
Corporation), to store internally developed codecs.
|
|
|
|
|
|
|
|
This muxer accepts a single @samp{vp8}, @samp{vp9}, or @samp{av1}
|
|
|
|
video stream.
|
|
|
|
|
2024-04-06 12:29:57 +02:00
|
|
|
@section jacosub
|
|
|
|
JACOsub subtitle format muxer.
|
|
|
|
|
|
|
|
This muxer accepts a single @samp{jacosub} subtitles stream.
|
|
|
|
|
|
|
|
For more information about the format, see
|
|
|
|
@url{http://unicorn.us.com/jacosub/jscripts.html}.
|
|
|
|
|
2024-04-06 12:38:04 +02:00
|
|
|
@section kvag
|
|
|
|
Simon & Schuster Interactive VAG muxer.
|
|
|
|
|
|
|
|
This custom VAG container is used by some Simon & Schuster Interactive
|
|
|
|
games such as "Real War", and "Real War: Rogue States".
|
|
|
|
|
|
|
|
This muxer accepts a single @samp{adpcm_ima_ssi} audio stream.
|
|
|
|
|
2024-04-05 00:38:03 +02:00
|
|
|
@section lc3
|
|
|
|
Bluetooth SIG Low Complexity Communication Codec audio (LC3), or
|
|
|
|
ETSI TS 103 634 Low Complexity Communication Codec plus (LC3plus).
|
|
|
|
|
|
|
|
This muxer accepts a single @samp{lc3} audio stream.
|
|
|
|
|
2024-04-06 12:55:58 +02:00
|
|
|
@section lrc
|
|
|
|
LRC lyrics file format muxer.
|
|
|
|
|
|
|
|
LRC (short for LyRiCs) is a computer file format that synchronizes
|
|
|
|
song lyrics with an audio file, such as MP3, Vorbis, or MIDI.
|
|
|
|
|
|
|
|
This muxer accepts a single @samp{subrip} or @samp{text} subtitles stream.
|
|
|
|
|
|
|
|
@subsection Metadata
|
|
|
|
The following metadata tags are converted to the format corresponding
|
|
|
|
metadata:
|
|
|
|
|
|
|
|
@table @option
|
|
|
|
@item title
|
|
|
|
@item album
|
|
|
|
@item artist
|
|
|
|
@item author
|
|
|
|
@item creator
|
|
|
|
@item encoder
|
|
|
|
@item encoder_version
|
|
|
|
@end table
|
|
|
|
|
|
|
|
If @samp{encoder_version} is not explicitly set, it is automatically
|
|
|
|
set to the libavformat version.
|
|
|
|
|
2013-06-29 14:53:58 +03:00
|
|
|
@section matroska
|
|
|
|
Matroska container muxer.
|
|
|
|
|
|
|
|
This muxer implements the matroska and webm container specs.
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
@subsection Metadata
|
2013-06-29 14:53:58 +03:00
|
|
|
The recognized metadata settings in this muxer are:
|
|
|
|
|
|
|
|
@table @option
|
2014-01-08 11:45:04 +03:00
|
|
|
@item title
|
2020-05-06 16:02:14 +02:00
|
|
|
Set title name provided to a single track. This gets mapped to
|
|
|
|
the FileDescription element for a stream written as attachment.
|
2013-06-29 14:53:58 +03:00
|
|
|
|
2014-01-08 11:45:04 +03:00
|
|
|
@item language
|
|
|
|
Specify the language of the track in the Matroska languages form.
|
2013-06-29 14:53:58 +03:00
|
|
|
|
2014-01-08 11:50:57 +03:00
|
|
|
The language can be either the 3 letters bibliographic ISO-639-2 (ISO
|
|
|
|
639-2/B) form (like "fre" for French), or a language code mixed with a
|
|
|
|
country code for specialities in languages (like "fre-ca" for Canadian
|
|
|
|
French).
|
|
|
|
|
2014-01-08 11:45:04 +03:00
|
|
|
@item stereo_mode
|
|
|
|
Set stereo 3D video layout of two views in a single video track.
|
2013-06-29 14:53:58 +03:00
|
|
|
|
2014-01-08 11:45:04 +03:00
|
|
|
The following values are recognized:
|
|
|
|
@table @samp
|
2013-06-29 14:53:58 +03:00
|
|
|
@item mono
|
|
|
|
video is not stereo
|
|
|
|
@item left_right
|
|
|
|
Both views are arranged side by side, Left-eye view is on the left
|
|
|
|
@item bottom_top
|
|
|
|
Both views are arranged in top-bottom orientation, Left-eye view is at bottom
|
|
|
|
@item top_bottom
|
|
|
|
Both views are arranged in top-bottom orientation, Left-eye view is on top
|
|
|
|
@item checkerboard_rl
|
|
|
|
Each view is arranged in a checkerboard interleaved pattern, Left-eye view being first
|
|
|
|
@item checkerboard_lr
|
|
|
|
Each view is arranged in a checkerboard interleaved pattern, Right-eye view being first
|
|
|
|
@item row_interleaved_rl
|
|
|
|
Each view is constituted by a row based interleaving, Right-eye view is first row
|
|
|
|
@item row_interleaved_lr
|
|
|
|
Each view is constituted by a row based interleaving, Left-eye view is first row
|
|
|
|
@item col_interleaved_rl
|
|
|
|
Both views are arranged in a column based interleaving manner, Right-eye view is first column
|
|
|
|
@item col_interleaved_lr
|
|
|
|
Both views are arranged in a column based interleaving manner, Left-eye view is first column
|
|
|
|
@item anaglyph_cyan_red
|
|
|
|
All frames are in anaglyph format viewable through red-cyan filters
|
|
|
|
@item right_left
|
|
|
|
Both views are arranged side by side, Right-eye view is on the left
|
|
|
|
@item anaglyph_green_magenta
|
|
|
|
All frames are in anaglyph format viewable through green-magenta filters
|
|
|
|
@item block_lr
|
|
|
|
Both eyes laced in one Block, Left-eye view is first
|
|
|
|
@item block_rl
|
|
|
|
Both eyes laced in one Block, Right-eye view is first
|
|
|
|
@end table
|
|
|
|
@end table
|
|
|
|
|
|
|
|
For example a 3D WebM clip can be created using the following command line:
|
|
|
|
@example
|
|
|
|
ffmpeg -i sample_left_right_clip.mpg -an -c:v libvpx -metadata stereo_mode=left_right -y stereo_clip.webm
|
|
|
|
@end example
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
@subsection Options
|
2013-06-29 14:53:58 +03:00
|
|
|
@table @option
|
2024-04-13 00:10:49 +02:00
|
|
|
@item reserve_index_space @var{size}
|
2013-06-29 14:53:58 +03:00
|
|
|
By default, this muxer writes the index for seeking (called cues in Matroska
|
|
|
|
terms) at the end of the file, because it cannot know in advance how much space
|
|
|
|
to leave for the index at the beginning of the file. However for some use cases
|
|
|
|
-- e.g. streaming where seeking is possible but slow -- it is useful to put the
|
|
|
|
index at the beginning of the file.
|
|
|
|
|
2024-04-13 00:10:49 +02:00
|
|
|
If this option is set to a non-zero value, the muxer will reserve @var{size} bytes
|
2013-06-29 14:53:58 +03:00
|
|
|
of space in the file header and then try to write the cues there when the muxing
|
2019-12-30 17:28:39 +02:00
|
|
|
finishes. If the reserved space does not suffice, no Cues will be written, the
|
|
|
|
file will be finalized and writing the trailer will return an error.
|
|
|
|
A safe size for most use cases should be about 50kB per hour of video.
|
2013-06-29 14:53:58 +03:00
|
|
|
|
|
|
|
Note that cues are only written if the output is seekable and this option will
|
|
|
|
have no effect if it is not.
|
2022-01-09 20:45:58 +02:00
|
|
|
|
2024-04-06 13:08:21 +02:00
|
|
|
@item cues_to_front @var{bool}
|
2022-01-09 20:45:58 +02:00
|
|
|
If set, the muxer will write the index at the beginning of the file
|
|
|
|
by shifting the main data if necessary. This can be combined with
|
|
|
|
reserve_index_space in which case the data is only shifted if
|
|
|
|
the initially reserved space turns out to be insufficient.
|
|
|
|
|
|
|
|
This option is ignored if the output is unseekable.
|
|
|
|
|
2024-04-16 09:18:21 +02:00
|
|
|
@item cluster_size_limit @var{size}
|
|
|
|
Store at most the provided amount of bytes in a cluster.
|
|
|
|
|
|
|
|
If not specified, the limit is set automatically to a sensible
|
|
|
|
hardcoded fixed value.
|
|
|
|
|
|
|
|
@item cluster_time_limit @var{duration}
|
|
|
|
Store at most the provided number of milliseconds in a cluster.
|
|
|
|
|
|
|
|
If not specified, the limit is set automatically to a sensible
|
|
|
|
hardcoded fixed value.
|
|
|
|
|
|
|
|
@item dash @var{bool}
|
|
|
|
Create a WebM file conforming to WebM DASH specification. By default
|
|
|
|
it is set to @code{false}.
|
|
|
|
|
|
|
|
@item dash_track_number @var{index}
|
|
|
|
Track number for the DASH stream. By default it is set to @code{1}.
|
|
|
|
|
|
|
|
@item live @var{bool}
|
|
|
|
Write files assuming it is a live stream. By default it is set to
|
|
|
|
@code{false}.
|
|
|
|
|
|
|
|
@item allow_raw_vfw @var{bool}
|
|
|
|
Allow raw VFW mode. By default it is set to @code{false}.
|
|
|
|
|
|
|
|
@item flipped_raw_rgb @var{bool}
|
|
|
|
If set to @code{true}, store positive height for raw RGB bitmaps, which indicates
|
|
|
|
bitmap is stored bottom-up. Note that this option does not flip the bitmap
|
|
|
|
which has to be done manually beforehand, e.g. by using the @samp{vflip} filter.
|
|
|
|
Default is @code{false} and indicates bitmap is stored top down.
|
|
|
|
|
|
|
|
@item write_crc32 @var{bool}
|
|
|
|
Write a CRC32 element inside every Level 1 element. By default it is
|
|
|
|
set to @code{true}. This option is ignored for WebM.
|
|
|
|
|
2024-04-06 13:08:21 +02:00
|
|
|
@item default_mode @var{mode}
|
2024-04-16 09:18:21 +02:00
|
|
|
Control how the FlagDefault of the output tracks will be set.
|
2020-01-18 08:05:20 +02:00
|
|
|
It influences which tracks players should play by default. The default mode
|
2021-08-20 08:10:12 +02:00
|
|
|
is @samp{passthrough}.
|
2020-01-18 08:05:20 +02:00
|
|
|
@table @samp
|
|
|
|
@item infer
|
2021-08-20 07:50:44 +02:00
|
|
|
Every track with disposition default will have the FlagDefault set.
|
|
|
|
Additionally, for each type of track (audio, video or subtitle), if no track
|
|
|
|
with disposition default of this type exists, then the first track of this type
|
|
|
|
will be marked as default (if existing). This ensures that the default flag
|
|
|
|
is set in a sensible way even if the input originated from containers that
|
|
|
|
lack the concept of default tracks.
|
2020-01-18 08:05:20 +02:00
|
|
|
@item infer_no_subs
|
|
|
|
This mode is the same as infer except that if no subtitle track with
|
|
|
|
disposition default exists, no subtitle track will be marked as default.
|
|
|
|
@item passthrough
|
|
|
|
In this mode the FlagDefault is set if and only if the AV_DISPOSITION_DEFAULT
|
|
|
|
flag is set in the disposition of the corresponding stream.
|
|
|
|
@end table
|
2013-06-29 14:53:58 +03:00
|
|
|
@end table
|
|
|
|
|
2012-04-07 12:05:58 +03:00
|
|
|
@anchor{md5}
|
|
|
|
@section md5
|
|
|
|
MD5 testing format.
|
|
|
|
|
2016-04-12 16:16:18 +02:00
|
|
|
This is a variant of the @ref{hash} muxer. Unlike that muxer, it
|
|
|
|
defaults to using the MD5 hash function.
|
2012-04-07 12:05:58 +03:00
|
|
|
|
2024-04-16 09:23:08 +02:00
|
|
|
See also the @ref{hash} and @ref{framemd5} muxers.
|
2012-04-07 12:05:58 +03:00
|
|
|
|
2024-04-16 09:23:08 +02:00
|
|
|
@subsection Examples
|
|
|
|
@itemize
|
|
|
|
@item
|
2016-04-12 16:16:18 +02:00
|
|
|
To compute the MD5 hash of the input converted to raw
|
2012-04-07 12:05:58 +03:00
|
|
|
audio and video, and store it in the file @file{out.md5}:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f md5 out.md5
|
|
|
|
@end example
|
|
|
|
|
2024-04-16 09:23:08 +02:00
|
|
|
@item
|
|
|
|
To print the MD5 hash to stdout:
|
2012-04-07 12:05:58 +03:00
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f md5 -
|
|
|
|
@end example
|
2024-04-16 09:23:08 +02:00
|
|
|
@end itemize
|
2012-04-07 12:05:58 +03:00
|
|
|
|
2024-04-16 09:29:47 +02:00
|
|
|
@section microdvd
|
|
|
|
MicroDVD subtitle format muxer.
|
|
|
|
|
|
|
|
This muxer accepts a single @samp{microdvd} subtitles stream.
|
|
|
|
|
2024-04-16 10:15:02 +02:00
|
|
|
@section mmf
|
|
|
|
Synthetic music Mobile Application Format (SMAF) format muxer.
|
|
|
|
|
|
|
|
SMAF is a music data format specified by Yamaha for portable
|
|
|
|
electronic devices, such as mobile phones and personal digital
|
|
|
|
assistants.
|
|
|
|
|
|
|
|
This muxer accepts a single @samp{adpcm_yamaha} audio stream.
|
|
|
|
|
2013-06-29 14:53:58 +03:00
|
|
|
@section mp3
|
|
|
|
|
2014-04-12 16:20:01 +03:00
|
|
|
The MP3 muxer writes a raw MP3 stream with the following optional features:
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
|
|
An ID3v2 metadata header at the beginning (enabled by default). Versions 2.3 and
|
|
|
|
2.4 are supported, the @code{id3v2_version} private option controls which one is
|
|
|
|
used (3 or 4). Setting @code{id3v2_version} to 0 disables the ID3v2 header
|
|
|
|
completely.
|
|
|
|
|
|
|
|
The muxer supports writing attached pictures (APIC frames) to the ID3v2 header.
|
|
|
|
The pictures are supplied to the muxer in form of a video stream with a single
|
|
|
|
packet. There can be any number of those streams, each will correspond to a
|
|
|
|
single APIC frame. The stream metadata tags @var{title} and @var{comment} map
|
|
|
|
to APIC @var{description} and @var{picture type} respectively. See
|
2013-06-29 14:53:58 +03:00
|
|
|
@url{http://id3.org/id3v2.4.0-frames} for allowed picture types.
|
|
|
|
|
|
|
|
Note that the APIC frames must be written at the beginning, so the muxer will
|
|
|
|
buffer the audio frames until it gets all the pictures. It is therefore advised
|
|
|
|
to provide the pictures as soon as possible to avoid excessive buffering.
|
|
|
|
|
2014-04-12 16:20:01 +03:00
|
|
|
@item
|
|
|
|
A Xing/LAME frame right after the ID3v2 header (if present). It is enabled by
|
|
|
|
default, but will be written only if the output is seekable. The
|
|
|
|
@code{write_xing} private option can be used to disable it. The frame contains
|
2014-04-12 16:20:57 +03:00
|
|
|
various information that may be useful to the decoder, like the audio duration
|
|
|
|
or encoder delay.
|
2014-04-12 16:20:01 +03:00
|
|
|
|
|
|
|
@item
|
|
|
|
A legacy ID3v1 tag at the end of the file (disabled by default). It may be
|
|
|
|
enabled with the @code{write_id3v1} private option, but as its capabilities are
|
|
|
|
very limited, its usage is not recommended.
|
|
|
|
@end itemize
|
|
|
|
|
2013-06-29 14:53:58 +03:00
|
|
|
Examples:
|
|
|
|
|
|
|
|
Write an mp3 with an ID3v2.3 header and an ID3v1 footer:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -id3v2_version 3 -write_id3v1 1 out.mp3
|
|
|
|
@end example
|
|
|
|
|
|
|
|
To attach a picture to an mp3 file select both the audio and the picture stream
|
|
|
|
with @code{map}:
|
|
|
|
@example
|
|
|
|
ffmpeg -i input.mp3 -i cover.png -c copy -map 0 -map 1
|
|
|
|
-metadata:s:v title="Album cover" -metadata:s:v comment="Cover (Front)" out.mp3
|
|
|
|
@end example
|
|
|
|
|
2014-01-17 17:31:18 +03:00
|
|
|
Write a "clean" MP3 without any extra features:
|
|
|
|
@example
|
|
|
|
ffmpeg -i input.wav -write_xing 0 -id3v2_version 0 out.mp3
|
2012-01-20 21:33:13 +03:00
|
|
|
@end example
|
|
|
|
|
2011-01-31 13:19:51 +02:00
|
|
|
@section mpegts
|
|
|
|
|
|
|
|
MPEG transport stream muxer.
|
|
|
|
|
|
|
|
This muxer implements ISO 13818-1 and part of ETSI EN 300 468.
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
The recognized metadata settings in mpegts muxer are @code{service_provider}
|
|
|
|
and @code{service_name}. If they are not set the default for
|
2017-03-16 05:51:01 +02:00
|
|
|
@code{service_provider} is @samp{FFmpeg} and the default for
|
|
|
|
@code{service_name} is @samp{Service01}.
|
2014-01-09 05:30:20 +03:00
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
|
2011-01-31 13:19:51 +02:00
|
|
|
The muxer options are:
|
|
|
|
|
|
|
|
@table @option
|
2017-03-16 05:51:01 +02:00
|
|
|
@item mpegts_transport_stream_id @var{integer}
|
|
|
|
Set the @samp{transport_stream_id}. This identifies a transponder in DVB.
|
|
|
|
Default is @code{0x0001}.
|
|
|
|
|
|
|
|
@item mpegts_original_network_id @var{integer}
|
|
|
|
Set the @samp{original_network_id}. This is unique identifier of a
|
|
|
|
network in DVB. Its main use is in the unique identification of a service
|
|
|
|
through the path @samp{Original_Network_ID, Transport_Stream_ID}. Default
|
|
|
|
is @code{0x0001}.
|
|
|
|
|
|
|
|
@item mpegts_service_id @var{integer}
|
|
|
|
Set the @samp{service_id}, also known as program in DVB. Default is
|
|
|
|
@code{0x0001}.
|
|
|
|
|
|
|
|
@item mpegts_service_type @var{integer}
|
|
|
|
Set the program @samp{service_type}. Default is @code{digital_tv}.
|
|
|
|
Accepts the following options:
|
|
|
|
@table @samp
|
2015-02-02 11:56:52 +02:00
|
|
|
@item hex_value
|
2019-02-13 18:03:07 +02:00
|
|
|
Any hexadecimal value between @code{0x01} and @code{0xff} as defined in
|
2017-03-16 05:51:01 +02:00
|
|
|
ETSI 300 468.
|
2015-02-02 11:56:52 +02:00
|
|
|
@item digital_tv
|
|
|
|
Digital TV service.
|
|
|
|
@item digital_radio
|
|
|
|
Digital Radio service.
|
|
|
|
@item teletext
|
|
|
|
Teletext service.
|
|
|
|
@item advanced_codec_digital_radio
|
|
|
|
Advanced Codec Digital Radio service.
|
|
|
|
@item mpeg2_digital_hdtv
|
|
|
|
MPEG2 Digital HDTV service.
|
|
|
|
@item advanced_codec_digital_sdtv
|
|
|
|
Advanced Codec Digital SDTV service.
|
|
|
|
@item advanced_codec_digital_hdtv
|
|
|
|
Advanced Codec Digital HDTV service.
|
|
|
|
@end table
|
|
|
|
|
2017-03-16 05:51:01 +02:00
|
|
|
@item mpegts_pmt_start_pid @var{integer}
|
2019-11-11 23:49:15 +02:00
|
|
|
Set the first PID for PMTs. Default is @code{0x1000}, minimum is @code{0x0020},
|
2019-11-11 01:06:01 +02:00
|
|
|
maximum is @code{0x1ffa}. This option has no effect in m2ts mode where the PMT
|
|
|
|
PID is fixed @code{0x0100}.
|
2013-08-03 17:59:25 +03:00
|
|
|
|
2017-03-16 05:51:01 +02:00
|
|
|
@item mpegts_start_pid @var{integer}
|
2019-11-11 23:49:15 +02:00
|
|
|
Set the first PID for elementary streams. Default is @code{0x0100}, minimum is
|
2019-11-11 01:06:01 +02:00
|
|
|
@code{0x0020}, maximum is @code{0x1ffa}. This option has no effect in m2ts mode
|
|
|
|
where the elementary stream PIDs are fixed.
|
2017-03-16 05:51:01 +02:00
|
|
|
|
|
|
|
@item mpegts_m2ts_mode @var{boolean}
|
|
|
|
Enable m2ts mode if set to @code{1}. Default value is @code{-1} which
|
|
|
|
disables m2ts mode.
|
|
|
|
|
|
|
|
@item muxrate @var{integer}
|
|
|
|
Set a constant muxrate. Default is VBR.
|
|
|
|
|
|
|
|
@item pes_payload_size @var{integer}
|
|
|
|
Set minimum PES packet payload in bytes. Default is @code{2930}.
|
|
|
|
|
|
|
|
@item mpegts_flags @var{flags}
|
|
|
|
Set mpegts flags. Accepts the following options:
|
|
|
|
@table @samp
|
2013-08-03 17:59:25 +03:00
|
|
|
@item resend_headers
|
|
|
|
Reemit PAT/PMT before writing the next packet.
|
|
|
|
@item latm
|
|
|
|
Use LATM packetization for AAC.
|
2015-07-16 01:54:56 +02:00
|
|
|
@item pat_pmt_at_frames
|
|
|
|
Reemit PAT and PMT at each video frame.
|
2015-12-25 11:33:35 +02:00
|
|
|
@item system_b
|
|
|
|
Conform to System B (DVB) instead of System A (ATSC).
|
2016-11-02 01:51:52 +02:00
|
|
|
@item initial_discontinuity
|
|
|
|
Mark the initial packet of each stream as discontinuity.
|
2021-05-18 13:56:00 +02:00
|
|
|
@item nit
|
|
|
|
Emit NIT table.
|
2022-09-29 20:00:31 +02:00
|
|
|
@item omit_rai
|
|
|
|
Disable writing of random access indicator.
|
2011-01-31 13:19:51 +02:00
|
|
|
@end table
|
|
|
|
|
2017-03-16 05:51:01 +02:00
|
|
|
@item mpegts_copyts @var{boolean}
|
|
|
|
Preserve original timestamps, if value is set to @code{1}. Default value
|
|
|
|
is @code{-1}, which results in shifting timestamps so that they start from 0.
|
|
|
|
|
|
|
|
@item omit_video_pes_length @var{boolean}
|
|
|
|
Omit the PES packet length for video packets. Default is @code{1} (true).
|
|
|
|
|
|
|
|
@item pcr_period @var{integer}
|
2019-08-12 23:32:11 +02:00
|
|
|
Override the default PCR retransmission time in milliseconds. Default is
|
|
|
|
@code{-1} which means that the PCR interval will be determined automatically:
|
|
|
|
20 ms is used for CBR streams, the highest multiple of the frame duration which
|
|
|
|
is less than 100 ms is used for VBR streams.
|
2017-03-16 05:51:01 +02:00
|
|
|
|
2019-08-08 09:53:10 +02:00
|
|
|
@item pat_period @var{duration}
|
|
|
|
Maximum time in seconds between PAT/PMT tables. Default is @code{0.1}.
|
2017-03-16 05:51:01 +02:00
|
|
|
|
2019-08-08 09:53:10 +02:00
|
|
|
@item sdt_period @var{duration}
|
|
|
|
Maximum time in seconds between SDT tables. Default is @code{0.5}.
|
2017-03-16 05:51:01 +02:00
|
|
|
|
2021-05-18 13:56:00 +02:00
|
|
|
@item nit_period @var{duration}
|
|
|
|
Maximum time in seconds between NIT tables. Default is @code{0.5}.
|
|
|
|
|
2017-03-16 05:51:01 +02:00
|
|
|
@item tables_version @var{integer}
|
2021-05-18 13:56:00 +02:00
|
|
|
Set PAT, PMT, SDT and NIT version (default @code{0}, valid values are from 0 to 31, inclusively).
|
2017-03-16 05:51:01 +02:00
|
|
|
This option allows updating stream structure so that standard consumer may
|
|
|
|
detect the change. To do so, reopen output @code{AVFormatContext} (in case of API
|
|
|
|
usage) or restart @command{ffmpeg} instance, cyclically changing
|
|
|
|
@option{tables_version} value:
|
|
|
|
|
|
|
|
@example
|
|
|
|
ffmpeg -i source1.ts -codec copy -f mpegts -tables_version 0 udp://1.1.1.1:1111
|
|
|
|
ffmpeg -i source2.ts -codec copy -f mpegts -tables_version 1 udp://1.1.1.1:1111
|
|
|
|
...
|
|
|
|
ffmpeg -i source3.ts -codec copy -f mpegts -tables_version 31 udp://1.1.1.1:1111
|
|
|
|
ffmpeg -i source1.ts -codec copy -f mpegts -tables_version 0 udp://1.1.1.1:1111
|
|
|
|
ffmpeg -i source2.ts -codec copy -f mpegts -tables_version 1 udp://1.1.1.1:1111
|
|
|
|
...
|
|
|
|
@end example
|
|
|
|
@end table
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
@subsection Example
|
2011-01-31 13:19:51 +02:00
|
|
|
|
|
|
|
@example
|
2011-12-10 03:25:15 +03:00
|
|
|
ffmpeg -i file.mpg -c copy \
|
2011-01-31 13:19:51 +02:00
|
|
|
-mpegts_original_network_id 0x1122 \
|
|
|
|
-mpegts_transport_stream_id 0x3344 \
|
|
|
|
-mpegts_service_id 0x5566 \
|
|
|
|
-mpegts_pmt_start_pid 0x1500 \
|
|
|
|
-mpegts_start_pid 0x150 \
|
|
|
|
-metadata service_provider="Some provider" \
|
|
|
|
-metadata service_name="Some Channel" \
|
2017-03-16 05:51:01 +02:00
|
|
|
out.ts
|
2011-01-31 13:19:51 +02:00
|
|
|
@end example
|
|
|
|
|
2019-03-11 22:22:37 +02:00
|
|
|
@section mxf, mxf_d10, mxf_opatom
|
2015-11-09 15:24:26 +02:00
|
|
|
|
|
|
|
MXF muxer.
|
|
|
|
|
|
|
|
@subsection Options
|
|
|
|
|
|
|
|
The muxer options are:
|
|
|
|
|
|
|
|
@table @option
|
|
|
|
@item store_user_comments @var{bool}
|
|
|
|
Set if user comments should be stored if available or never.
|
|
|
|
IRT D-10 does not allow user comments. The default is thus to write them for
|
2019-03-11 22:22:37 +02:00
|
|
|
mxf and mxf_opatom but not for mxf_d10
|
2015-11-09 15:24:26 +02:00
|
|
|
@end table
|
|
|
|
|
2011-01-31 16:01:46 +02:00
|
|
|
@section null
|
|
|
|
|
|
|
|
Null muxer.
|
|
|
|
|
|
|
|
This muxer does not generate any output file, it is mainly useful for
|
|
|
|
testing or benchmarking purposes.
|
|
|
|
|
2011-12-10 03:25:15 +03:00
|
|
|
For example to benchmark decoding with @command{ffmpeg} you can use the
|
2011-01-31 16:01:46 +02:00
|
|
|
command:
|
|
|
|
@example
|
|
|
|
ffmpeg -benchmark -i INPUT -f null out.null
|
|
|
|
@end example
|
|
|
|
|
|
|
|
Note that the above command does not read or write the @file{out.null}
|
2011-12-10 03:25:15 +03:00
|
|
|
file, but specifying the output file is required by the @command{ffmpeg}
|
2011-01-31 16:01:46 +02:00
|
|
|
syntax.
|
|
|
|
|
|
|
|
Alternatively you can write the command as:
|
|
|
|
@example
|
|
|
|
ffmpeg -benchmark -i INPUT -f null -
|
|
|
|
@end example
|
|
|
|
|
2014-03-06 19:58:34 +03:00
|
|
|
@section nut
|
|
|
|
|
|
|
|
@table @option
|
|
|
|
@item -syncpoints @var{flags}
|
|
|
|
Change the syncpoint usage in nut:
|
|
|
|
@table @option
|
|
|
|
@item @var{default} use the normal low-overhead seeking aids.
|
|
|
|
@item @var{none} do not use the syncpoints at all, reducing the overhead but making the stream non-seekable;
|
2014-06-03 05:46:04 +03:00
|
|
|
Use of this option is not recommended, as the resulting files are very damage
|
2014-05-29 04:59:25 +03:00
|
|
|
sensitive and seeking is not possible. Also in general the overhead from
|
|
|
|
syncpoints is negligible. Note, -@code{write_index} 0 can be used to disable
|
|
|
|
all growing data tables, allowing to mux endless streams with limited memory
|
2015-01-08 04:16:54 +02:00
|
|
|
and without these disadvantages.
|
2014-03-06 19:58:34 +03:00
|
|
|
@item @var{timestamped} extend the syncpoint with a wallclock field.
|
|
|
|
@end table
|
|
|
|
The @var{none} and @var{timestamped} flags are experimental.
|
2014-05-29 04:32:44 +03:00
|
|
|
@item -write_index @var{bool}
|
|
|
|
Write index at the end, the default is to write an index.
|
2014-03-06 19:58:34 +03:00
|
|
|
@end table
|
|
|
|
|
|
|
|
@example
|
2014-05-29 02:09:51 +03:00
|
|
|
ffmpeg -i INPUT -f_strict experimental -syncpoints none - | processor
|
2014-03-06 19:58:34 +03:00
|
|
|
@end example
|
|
|
|
|
2013-06-29 14:53:58 +03:00
|
|
|
@section ogg
|
2011-05-23 18:33:35 +03:00
|
|
|
|
2013-06-29 14:53:58 +03:00
|
|
|
Ogg container muxer.
|
2013-04-30 09:36:20 +03:00
|
|
|
|
|
|
|
@table @option
|
2013-06-29 14:53:58 +03:00
|
|
|
@item -page_duration @var{duration}
|
|
|
|
Preferred page duration, in microseconds. The muxer will attempt to create
|
|
|
|
pages that are approximately @var{duration} microseconds long. This allows the
|
|
|
|
user to compromise between seek granularity and container overhead. The default
|
|
|
|
is 1 second. A value of 0 will fill all segments, making pages as large as
|
|
|
|
possible. A value of 1 will effectively use 1 packet-per-page in most
|
|
|
|
situations, giving a small seek granularity at the cost of additional container
|
|
|
|
overhead.
|
2015-01-30 18:29:22 +02:00
|
|
|
@item -serial_offset @var{value}
|
|
|
|
Serial value from which to set the streams serial number.
|
|
|
|
Setting it to different and sufficiently large values ensures that the produced
|
|
|
|
ogg files can be safely chained.
|
|
|
|
|
2013-04-30 09:36:20 +03:00
|
|
|
@end table
|
|
|
|
|
2024-04-02 07:24:57 +02:00
|
|
|
@anchor{rcwtenc}
|
libavformat: add RCWT closed caption muxex
Signed-off-by: Marth64 <marth64@proxyid.net>
Raw Captions With Time (RCWT) is a format native to ccextractor, a commonly
used open source tool for processing 608/708 closed caption (CC) sources.
It can be used to archive the original, raw CC bitstream and to produce
a source file file for later CC processing or conversion. As a result,
it also allows for interopability with ccextractor for processing CC data
extracted via ffmpeg. The format is simple to parse and can be used
to retain all lines and variants of CC.
A free specification of RCWT can be found here:
https://github.com/CCExtractor/ccextractor/blob/master/docs/BINARY_FILE_FORMAT.TXT
This muxer implements the specification as of 01/05/2024, which has
been stable and unchanged for 10 years as of this writing.
This muxer will have some nuances from the way that ccextractor muxes RCWT.
No compatibility issues when processing the output with ccextractor
have been observed as a result of this so far, but mileage may vary
and outputs will not be a bit-exact match.
Specifically, the differences are:
(1) This muxer will identify as "FF" as the writing program identifier, so
as to be honest about the output's origin.
(2) ffmpeg's MPEG-1/2, H264, HEVC, etc. decoders extract closed captioning
data differently than ccextractor from embedded SEI/user data.
For example, DVD captioning bytes will be translated to ATSC A53 format.
This allows ffmpeg to handle 608/708 in a consistant way downstream.
This is a lossless conversion and the meaningful data is retained.
(3) This muxer will not alter the extracted data except to remove invalid
packets in between valid CC blocks. On the other hand, ccextractor
will by default remove mid-stream padding, and add padding at the end
of the stream (in order to convey the end time of the source video).
2024-01-14 14:53:05 +02:00
|
|
|
@section rcwt
|
|
|
|
|
2024-04-02 07:24:57 +02:00
|
|
|
RCWT (Raw Captions With Time) is a format native to ccextractor, a commonly
|
|
|
|
used open source tool for processing 608/708 Closed Captions (CC) sources.
|
|
|
|
It can be used to archive the original extracted CC bitstream and to produce
|
|
|
|
a source file for later processing or conversion. The format allows
|
|
|
|
for interoperability between ccextractor and FFmpeg, is simple to parse,
|
|
|
|
and can be used to create a backup of the CC presentation.
|
libavformat: add RCWT closed caption muxex
Signed-off-by: Marth64 <marth64@proxyid.net>
Raw Captions With Time (RCWT) is a format native to ccextractor, a commonly
used open source tool for processing 608/708 closed caption (CC) sources.
It can be used to archive the original, raw CC bitstream and to produce
a source file file for later CC processing or conversion. As a result,
it also allows for interopability with ccextractor for processing CC data
extracted via ffmpeg. The format is simple to parse and can be used
to retain all lines and variants of CC.
A free specification of RCWT can be found here:
https://github.com/CCExtractor/ccextractor/blob/master/docs/BINARY_FILE_FORMAT.TXT
This muxer implements the specification as of 01/05/2024, which has
been stable and unchanged for 10 years as of this writing.
This muxer will have some nuances from the way that ccextractor muxes RCWT.
No compatibility issues when processing the output with ccextractor
have been observed as a result of this so far, but mileage may vary
and outputs will not be a bit-exact match.
Specifically, the differences are:
(1) This muxer will identify as "FF" as the writing program identifier, so
as to be honest about the output's origin.
(2) ffmpeg's MPEG-1/2, H264, HEVC, etc. decoders extract closed captioning
data differently than ccextractor from embedded SEI/user data.
For example, DVD captioning bytes will be translated to ATSC A53 format.
This allows ffmpeg to handle 608/708 in a consistant way downstream.
This is a lossless conversion and the meaningful data is retained.
(3) This muxer will not alter the extracted data except to remove invalid
packets in between valid CC blocks. On the other hand, ccextractor
will by default remove mid-stream padding, and add padding at the end
of the stream (in order to convey the end time of the source video).
2024-01-14 14:53:05 +02:00
|
|
|
|
2024-04-02 07:24:57 +02:00
|
|
|
This muxer implements the specification as of March 2024, which has
|
|
|
|
been stable and unchanged since April 2014.
|
libavformat: add RCWT closed caption muxex
Signed-off-by: Marth64 <marth64@proxyid.net>
Raw Captions With Time (RCWT) is a format native to ccextractor, a commonly
used open source tool for processing 608/708 closed caption (CC) sources.
It can be used to archive the original, raw CC bitstream and to produce
a source file file for later CC processing or conversion. As a result,
it also allows for interopability with ccextractor for processing CC data
extracted via ffmpeg. The format is simple to parse and can be used
to retain all lines and variants of CC.
A free specification of RCWT can be found here:
https://github.com/CCExtractor/ccextractor/blob/master/docs/BINARY_FILE_FORMAT.TXT
This muxer implements the specification as of 01/05/2024, which has
been stable and unchanged for 10 years as of this writing.
This muxer will have some nuances from the way that ccextractor muxes RCWT.
No compatibility issues when processing the output with ccextractor
have been observed as a result of this so far, but mileage may vary
and outputs will not be a bit-exact match.
Specifically, the differences are:
(1) This muxer will identify as "FF" as the writing program identifier, so
as to be honest about the output's origin.
(2) ffmpeg's MPEG-1/2, H264, HEVC, etc. decoders extract closed captioning
data differently than ccextractor from embedded SEI/user data.
For example, DVD captioning bytes will be translated to ATSC A53 format.
This allows ffmpeg to handle 608/708 in a consistant way downstream.
This is a lossless conversion and the meaningful data is retained.
(3) This muxer will not alter the extracted data except to remove invalid
packets in between valid CC blocks. On the other hand, ccextractor
will by default remove mid-stream padding, and add padding at the end
of the stream (in order to convey the end time of the source video).
2024-01-14 14:53:05 +02:00
|
|
|
|
|
|
|
This muxer will have some nuances from the way that ccextractor muxes RCWT.
|
|
|
|
No compatibility issues when processing the output with ccextractor
|
|
|
|
have been observed as a result of this so far, but mileage may vary
|
|
|
|
and outputs will not be a bit-exact match.
|
|
|
|
|
|
|
|
A free specification of RCWT can be found here:
|
|
|
|
@url{https://github.com/CCExtractor/ccextractor/blob/master/docs/BINARY_FILE_FORMAT.TXT}
|
|
|
|
|
2024-04-02 07:24:57 +02:00
|
|
|
@subsection Examples
|
|
|
|
|
|
|
|
@itemize
|
|
|
|
@item
|
|
|
|
Extract Closed Captions to RCWT using lavfi:
|
|
|
|
@example
|
|
|
|
ffmpeg -f lavfi -i "movie=INPUT.mkv[out+subcc]" -map 0:s:0 -c:s copy -f rcwt CC.rcwt.bin
|
|
|
|
@end example
|
|
|
|
@end itemize
|
|
|
|
|
2014-01-02 02:30:37 +03:00
|
|
|
@anchor{segment}
|
2012-01-14 13:25:45 +03:00
|
|
|
@section segment, stream_segment, ssegment
|
2011-10-03 00:05:29 +03:00
|
|
|
|
|
|
|
Basic stream segmenter.
|
|
|
|
|
2014-01-02 02:33:01 +03:00
|
|
|
This muxer outputs streams to a number of separate files of nearly
|
2015-01-30 12:48:44 +02:00
|
|
|
fixed duration. Output filename pattern can be set in a fashion
|
|
|
|
similar to @ref{image2}, or by using a @code{strftime} template if
|
|
|
|
the @option{strftime} option is enabled.
|
2011-10-03 00:05:29 +03:00
|
|
|
|
2012-01-14 13:25:45 +03:00
|
|
|
@code{stream_segment} is a variant of the muxer used to write to
|
|
|
|
streaming output formats, i.e. which do not require global headers,
|
|
|
|
and is recommended for outputting e.g. to MPEG transport stream segments.
|
|
|
|
@code{ssegment} is a shorter alias for @code{stream_segment}.
|
|
|
|
|
2012-12-22 23:49:06 +03:00
|
|
|
Every segment starts with a keyframe of the selected reference stream,
|
|
|
|
which is set through the @option{reference_stream} option.
|
|
|
|
|
2012-01-14 13:25:45 +03:00
|
|
|
Note that if you want accurate splitting for a video file, you need to
|
|
|
|
make the input key frames correspond to the exact splitting times
|
|
|
|
expected by the segmenter, or the segment muxer will start the new
|
|
|
|
segment with the key frame found next after the specified start
|
|
|
|
time.
|
|
|
|
|
2011-10-03 00:05:29 +03:00
|
|
|
The segment muxer works best with a single constant frame rate video.
|
|
|
|
|
2012-08-16 01:16:28 +03:00
|
|
|
Optionally it can generate a list of the created segments, by setting
|
|
|
|
the option @var{segment_list}. The list type is specified by the
|
2013-11-22 14:49:05 +03:00
|
|
|
@var{segment_list_type} option. The entry filenames in the segment
|
|
|
|
list are set by default to the basename of the corresponding segment
|
|
|
|
files.
|
2012-01-14 13:25:45 +03:00
|
|
|
|
2014-01-02 02:31:49 +03:00
|
|
|
See also the @ref{hls} muxer, which provides a more specific
|
|
|
|
implementation for HLS segmentation.
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
@subsection Options
|
|
|
|
|
2012-01-14 13:25:45 +03:00
|
|
|
The segment muxer supports the following options:
|
2011-10-03 00:05:29 +03:00
|
|
|
|
|
|
|
@table @option
|
2016-02-28 22:36:42 +02:00
|
|
|
@item increment_tc @var{1|0}
|
|
|
|
if set to @code{1}, increment timecode between each segment
|
|
|
|
If this is selected, the input need to have
|
|
|
|
a timecode in the first video stream. Default value is
|
|
|
|
@code{0}.
|
|
|
|
|
2012-12-22 23:49:06 +03:00
|
|
|
@item reference_stream @var{specifier}
|
|
|
|
Set the reference stream, as specified by the string @var{specifier}.
|
2014-03-06 21:07:53 +03:00
|
|
|
If @var{specifier} is set to @code{auto}, the reference is chosen
|
2013-01-02 14:53:55 +03:00
|
|
|
automatically. Otherwise it must be a stream specifier (see the ``Stream
|
2012-12-22 23:49:06 +03:00
|
|
|
specifiers'' chapter in the ffmpeg manual) which specifies the
|
2013-06-29 15:09:47 +03:00
|
|
|
reference stream. The default value is @code{auto}.
|
2012-12-22 23:49:06 +03:00
|
|
|
|
2011-10-03 00:05:29 +03:00
|
|
|
@item segment_format @var{format}
|
|
|
|
Override the inner container format, by default it is guessed by the filename
|
|
|
|
extension.
|
2013-01-19 02:44:31 +03:00
|
|
|
|
2014-09-06 16:43:11 +03:00
|
|
|
@item segment_format_options @var{options_list}
|
|
|
|
Set output format options using a :-separated list of key=value
|
|
|
|
parameters. Values containing the @code{:} special character must be
|
|
|
|
escaped.
|
|
|
|
|
2011-10-03 00:05:29 +03:00
|
|
|
@item segment_list @var{name}
|
2012-01-14 13:25:45 +03:00
|
|
|
Generate also a listfile named @var{name}. If not specified no
|
|
|
|
listfile is generated.
|
2013-01-19 02:44:31 +03:00
|
|
|
|
2012-09-01 19:01:51 +03:00
|
|
|
@item segment_list_flags @var{flags}
|
|
|
|
Set flags affecting the segment list generation.
|
|
|
|
|
|
|
|
It currently supports the following flags:
|
2013-06-29 15:09:47 +03:00
|
|
|
@table @samp
|
2012-09-01 19:01:51 +03:00
|
|
|
@item cache
|
|
|
|
Allow caching (only affects M3U8 list files).
|
|
|
|
|
|
|
|
@item live
|
|
|
|
Allow live-friendly file generation.
|
|
|
|
@end table
|
|
|
|
|
2011-10-03 00:05:29 +03:00
|
|
|
@item segment_list_size @var{size}
|
2014-07-09 22:40:43 +03:00
|
|
|
Update the list file so that it contains at most @var{size}
|
2012-12-20 16:20:19 +03:00
|
|
|
segments. If 0 the list file will contain all the segments. Default
|
|
|
|
value is 0.
|
|
|
|
|
2013-11-22 14:49:05 +03:00
|
|
|
@item segment_list_entry_prefix @var{prefix}
|
2014-03-18 23:18:59 +03:00
|
|
|
Prepend @var{prefix} to each entry. Useful to generate absolute paths.
|
2014-04-29 16:42:04 +03:00
|
|
|
By default no prefix is applied.
|
2013-11-22 14:49:05 +03:00
|
|
|
|
2015-07-02 11:00:18 +02:00
|
|
|
@item segment_list_type @var{type}
|
|
|
|
Select the listing format.
|
|
|
|
|
2012-01-14 01:29:09 +03:00
|
|
|
The following values are recognized:
|
2013-06-29 15:09:47 +03:00
|
|
|
@table @samp
|
2012-01-14 01:29:09 +03:00
|
|
|
@item flat
|
|
|
|
Generate a flat list for the created segments, one segment per line.
|
|
|
|
|
2012-08-16 19:13:17 +03:00
|
|
|
@item csv, ext
|
2012-01-14 01:29:09 +03:00
|
|
|
Generate a list for the created segments, one segment per line,
|
2012-08-16 19:13:17 +03:00
|
|
|
each line matching the format (comma-separated values):
|
2012-01-14 01:29:09 +03:00
|
|
|
@example
|
|
|
|
@var{segment_filename},@var{segment_start_time},@var{segment_end_time}
|
|
|
|
@end example
|
|
|
|
|
|
|
|
@var{segment_filename} is the name of the output file generated by the
|
2012-09-01 17:12:29 +03:00
|
|
|
muxer according to the provided pattern. CSV escaping (according to
|
|
|
|
RFC4180) is applied if required.
|
2012-01-14 01:29:09 +03:00
|
|
|
|
|
|
|
@var{segment_start_time} and @var{segment_end_time} specify
|
|
|
|
the segment start and end time expressed in seconds.
|
2012-08-15 12:06:34 +03:00
|
|
|
|
2012-08-16 19:13:17 +03:00
|
|
|
A list file with the suffix @code{".csv"} or @code{".ext"} will
|
|
|
|
auto-select this format.
|
|
|
|
|
2013-06-29 15:09:47 +03:00
|
|
|
@samp{ext} is deprecated in favor or @samp{csv}.
|
2012-08-16 19:13:17 +03:00
|
|
|
|
2013-02-21 21:33:26 +03:00
|
|
|
@item ffconcat
|
|
|
|
Generate an ffconcat file for the created segments. The resulting file
|
|
|
|
can be read using the FFmpeg @ref{concat} demuxer.
|
|
|
|
|
|
|
|
A list file with the suffix @code{".ffcat"} or @code{".ffconcat"} will
|
|
|
|
auto-select this format.
|
|
|
|
|
2012-08-15 12:06:34 +03:00
|
|
|
@item m3u8
|
2013-01-22 22:17:00 +03:00
|
|
|
Generate an extended M3U8 file, version 3, compliant with
|
|
|
|
@url{http://tools.ietf.org/id/draft-pantos-http-live-streaming}.
|
2012-08-16 01:16:28 +03:00
|
|
|
|
|
|
|
A list file with the suffix @code{".m3u8"} will auto-select this format.
|
2012-01-14 01:29:09 +03:00
|
|
|
@end table
|
|
|
|
|
2012-08-16 01:16:28 +03:00
|
|
|
If not specified the type is guessed from the list file name suffix.
|
2013-01-19 02:44:31 +03:00
|
|
|
|
2012-07-08 18:26:33 +03:00
|
|
|
@item segment_time @var{time}
|
2013-01-19 02:50:40 +03:00
|
|
|
Set segment duration to @var{time}, the value must be a duration
|
|
|
|
specification. Default value is "2". See also the
|
|
|
|
@option{segment_times} option.
|
|
|
|
|
|
|
|
Note that splitting may not be accurate, unless you force the
|
|
|
|
reference stream key-frames at the given time. See the introductory
|
|
|
|
notice and the examples below.
|
2013-01-19 02:44:31 +03:00
|
|
|
|
2022-12-21 16:11:58 +02:00
|
|
|
@item min_seg_duration @var{time}
|
|
|
|
Set minimum segment duration to @var{time}, the value must be a duration
|
|
|
|
specification. This prevents the muxer ending segments at a duration below
|
|
|
|
this value. Only effective with @code{segment_time}. Default value is "0".
|
|
|
|
|
2014-07-07 22:35:43 +03:00
|
|
|
@item segment_atclocktime @var{1|0}
|
|
|
|
If set to "1" split at regular clock time intervals starting from 00:00
|
|
|
|
o'clock. The @var{time} value specified in @option{segment_time} is
|
|
|
|
used for setting the length of the splitting interval.
|
|
|
|
|
|
|
|
For example with @option{segment_time} set to "900" this makes it possible
|
|
|
|
to create files at 12:00 o'clock, 12:15, 12:30, etc.
|
|
|
|
|
|
|
|
Default value is "0".
|
|
|
|
|
2016-01-13 02:44:36 +02:00
|
|
|
@item segment_clocktime_offset @var{duration}
|
|
|
|
Delay the segment splitting times with the specified duration when using
|
|
|
|
@option{segment_atclocktime}.
|
|
|
|
|
|
|
|
For example with @option{segment_time} set to "900" and
|
|
|
|
@option{segment_clocktime_offset} set to "300" this makes it possible to
|
|
|
|
create files at 12:05, 12:20, 12:35, etc.
|
|
|
|
|
|
|
|
Default value is "0".
|
|
|
|
|
2016-01-18 02:29:06 +02:00
|
|
|
@item segment_clocktime_wrap_duration @var{duration}
|
|
|
|
Force the segmenter to only start a new segment if a packet reaches the muxer
|
|
|
|
within the specified duration after the segmenting clock time. This way you
|
|
|
|
can make the segmenter more resilient to backward local time jumps, such as
|
|
|
|
leap seconds or transition to standard time from daylight savings time.
|
|
|
|
|
|
|
|
Default is the maximum possible duration which means starting a new segment
|
|
|
|
regardless of the elapsed time since the last clock time.
|
|
|
|
|
2012-01-29 00:21:43 +03:00
|
|
|
@item segment_time_delta @var{delta}
|
|
|
|
Specify the accuracy time when selecting the start time for a
|
2013-01-19 02:50:40 +03:00
|
|
|
segment, expressed as a duration specification. Default value is "0".
|
2012-01-29 00:21:43 +03:00
|
|
|
|
|
|
|
When delta is specified a key-frame will start a new segment if its
|
|
|
|
PTS satisfies the relation:
|
|
|
|
@example
|
|
|
|
PTS >= start_time - time_delta
|
|
|
|
@end example
|
|
|
|
|
|
|
|
This option is useful when splitting video content, which is always
|
|
|
|
split at GOP boundaries, in case a key frame is found just before the
|
|
|
|
specified split time.
|
|
|
|
|
|
|
|
In particular may be used in combination with the @file{ffmpeg} option
|
|
|
|
@var{force_key_frames}. The key frame times specified by
|
|
|
|
@var{force_key_frames} may not be set accurately because of rounding
|
|
|
|
issues, with the consequence that a key frame time may result set just
|
|
|
|
before the specified time. For constant frame rate videos a value of
|
2014-01-19 14:19:11 +03:00
|
|
|
1/(2*@var{frame_rate}) should address the worst case mismatch between
|
2012-01-29 00:21:43 +03:00
|
|
|
the specified time and the time set by @var{force_key_frames}.
|
|
|
|
|
2012-01-29 00:36:38 +03:00
|
|
|
@item segment_times @var{times}
|
|
|
|
Specify a list of split points. @var{times} contains a list of comma
|
2013-01-19 02:50:40 +03:00
|
|
|
separated duration specifications, in increasing order. See also
|
|
|
|
the @option{segment_time} option.
|
2012-11-29 15:45:50 +03:00
|
|
|
|
2012-12-09 22:26:30 +03:00
|
|
|
@item segment_frames @var{frames}
|
|
|
|
Specify a list of split video frame numbers. @var{frames} contains a
|
|
|
|
list of comma separated integer numbers, in increasing order.
|
|
|
|
|
|
|
|
This option specifies to start a new segment whenever a reference
|
|
|
|
stream key frame is found and the sequential number (starting from 0)
|
|
|
|
of the frame is greater or equal to the next value in the list.
|
|
|
|
|
2012-02-25 23:45:23 +03:00
|
|
|
@item segment_wrap @var{limit}
|
|
|
|
Wrap around segment index once it reaches @var{limit}.
|
2012-11-29 15:45:50 +03:00
|
|
|
|
2012-12-09 20:21:00 +03:00
|
|
|
@item segment_start_number @var{number}
|
|
|
|
Set the sequence number of the first segment. Defaults to @code{0}.
|
|
|
|
|
2015-01-30 12:48:44 +02:00
|
|
|
@item strftime @var{1|0}
|
|
|
|
Use the @code{strftime} function to define the name of the new
|
|
|
|
segments to write. If this is selected, the output segment name must
|
|
|
|
contain a @code{strftime} function template. Default value is
|
|
|
|
@code{0}.
|
|
|
|
|
2015-06-09 13:44:51 +02:00
|
|
|
@item break_non_keyframes @var{1|0}
|
|
|
|
If enabled, allow segments to start on frames other than keyframes. This
|
|
|
|
improves behavior on some players when the time between keyframes is
|
|
|
|
inconsistent, but may make things worse on others, and can cause some oddities
|
|
|
|
during seeking. Defaults to @code{0}.
|
|
|
|
|
2012-11-29 15:45:50 +03:00
|
|
|
@item reset_timestamps @var{1|0}
|
2017-09-22 01:10:56 +02:00
|
|
|
Reset timestamps at the beginning of each segment, so that each segment
|
2012-11-29 15:45:50 +03:00
|
|
|
will start with near-zero timestamps. It is meant to ease the playback
|
|
|
|
of the generated segments. May not work with some combinations of
|
|
|
|
muxers/codecs. It is set to @code{0} by default.
|
2013-07-05 15:28:38 +03:00
|
|
|
|
|
|
|
@item initial_offset @var{offset}
|
|
|
|
Specify timestamp offset to apply to the output packet timestamps. The
|
|
|
|
argument must be a time duration specification, and defaults to 0.
|
2016-03-07 04:48:57 +02:00
|
|
|
|
|
|
|
@item write_empty_segments @var{1|0}
|
|
|
|
If enabled, write an empty segment if there are no packets during the period a
|
|
|
|
segment would usually span. Otherwise, the segment will be filled with the next
|
|
|
|
packet written. Defaults to @code{0}.
|
2011-10-03 00:05:29 +03:00
|
|
|
@end table
|
|
|
|
|
2017-10-13 12:24:51 +02:00
|
|
|
Make sure to require a closed GOP when encoding and to set the GOP
|
|
|
|
size to fit your segment time constraint.
|
|
|
|
|
2013-02-01 20:12:54 +03:00
|
|
|
@subsection Examples
|
2012-01-14 13:25:45 +03:00
|
|
|
|
|
|
|
@itemize
|
|
|
|
@item
|
2014-09-07 14:12:41 +03:00
|
|
|
Remux the content of file @file{in.mkv} to a list of segments
|
2012-01-14 13:25:45 +03:00
|
|
|
@file{out-000.nut}, @file{out-001.nut}, etc., and write the list of
|
|
|
|
generated segments to @file{out.list}:
|
2011-10-03 00:05:29 +03:00
|
|
|
@example
|
2017-11-12 04:47:50 +02:00
|
|
|
ffmpeg -i in.mkv -codec hevc -flags +cgop -g 60 -map 0 -f segment -segment_list out.list out%03d.nut
|
2011-10-03 00:05:29 +03:00
|
|
|
@end example
|
|
|
|
|
2014-09-06 16:43:11 +03:00
|
|
|
@item
|
|
|
|
Segment input and set output format options for the output segments:
|
|
|
|
@example
|
|
|
|
ffmpeg -i in.mkv -f segment -segment_time 10 -segment_format_options movflags=+faststart out%03d.mp4
|
|
|
|
@end example
|
|
|
|
|
2012-01-29 00:36:38 +03:00
|
|
|
@item
|
2014-09-07 14:12:41 +03:00
|
|
|
Segment the input file according to the split points specified by the
|
|
|
|
@var{segment_times} option:
|
2012-01-29 00:36:38 +03:00
|
|
|
@example
|
2012-08-16 19:13:17 +03:00
|
|
|
ffmpeg -i in.mkv -codec copy -map 0 -f segment -segment_list out.csv -segment_times 1,2,3,5,8,13,21 out%03d.nut
|
2012-01-29 00:36:38 +03:00
|
|
|
@end example
|
|
|
|
|
2012-01-29 00:21:43 +03:00
|
|
|
@item
|
2014-09-07 14:12:41 +03:00
|
|
|
Use the @command{ffmpeg} @option{force_key_frames}
|
2012-01-29 00:21:43 +03:00
|
|
|
option to force key frames in the input at the specified location, together
|
2013-06-29 15:09:47 +03:00
|
|
|
with the segment option @option{segment_time_delta} to account for
|
2012-01-29 00:21:43 +03:00
|
|
|
possible roundings operated when setting key frame times.
|
|
|
|
@example
|
2013-01-02 14:56:12 +03:00
|
|
|
ffmpeg -i in.mkv -force_key_frames 1,2,3,5,8,13,21 -codec:v mpeg4 -codec:a pcm_s16le -map 0 \
|
2012-08-16 19:13:17 +03:00
|
|
|
-f segment -segment_list out.csv -segment_times 1,2,3,5,8,13,21 -segment_time_delta 0.05 out%03d.nut
|
2012-01-29 00:21:43 +03:00
|
|
|
@end example
|
|
|
|
In order to force key frames on the input file, transcoding is
|
|
|
|
required.
|
|
|
|
|
2012-12-09 22:26:30 +03:00
|
|
|
@item
|
|
|
|
Segment the input file by splitting the input file according to the
|
2013-06-29 15:09:47 +03:00
|
|
|
frame numbers sequence specified with the @option{segment_frames} option:
|
2012-12-09 22:26:30 +03:00
|
|
|
@example
|
|
|
|
ffmpeg -i in.mkv -codec copy -map 0 -f segment -segment_list out.csv -segment_frames 100,200,300,500,800 out%03d.nut
|
|
|
|
@end example
|
|
|
|
|
2012-01-14 13:25:45 +03:00
|
|
|
@item
|
2014-09-07 14:12:41 +03:00
|
|
|
Convert the @file{in.mkv} to TS segments using the @code{libx264}
|
2016-09-29 22:54:42 +02:00
|
|
|
and @code{aac} encoders:
|
2012-01-14 13:25:45 +03:00
|
|
|
@example
|
2016-09-29 22:54:42 +02:00
|
|
|
ffmpeg -i in.mkv -map 0 -codec:v libx264 -codec:a aac -f ssegment -segment_list out.list out%03d.ts
|
2012-01-14 13:25:45 +03:00
|
|
|
@end example
|
2012-09-01 19:01:51 +03:00
|
|
|
|
|
|
|
@item
|
|
|
|
Segment the input file, and create an M3U8 live playlist (can be used
|
|
|
|
as live HLS source):
|
|
|
|
@example
|
|
|
|
ffmpeg -re -i in.mkv -codec copy -map 0 -f segment -segment_list playlist.m3u8 \
|
|
|
|
-segment_list_flags +live -segment_time 10 out%03d.mkv
|
|
|
|
@end example
|
2012-01-14 13:25:45 +03:00
|
|
|
@end itemize
|
|
|
|
|
2014-05-08 23:50:35 +03:00
|
|
|
@section smoothstreaming
|
|
|
|
|
|
|
|
Smooth Streaming muxer generates a set of files (Manifest, chunks) suitable for serving with conventional web server.
|
|
|
|
|
|
|
|
@table @option
|
|
|
|
@item window_size
|
|
|
|
Specify the number of fragments kept in the manifest. Default 0 (keep all).
|
|
|
|
|
|
|
|
@item extra_window_size
|
|
|
|
Specify the number of fragments kept outside of the manifest before removing from disk. Default 5.
|
|
|
|
|
|
|
|
@item lookahead_count
|
|
|
|
Specify the number of lookahead fragments. Default 2.
|
|
|
|
|
|
|
|
@item min_frag_duration
|
|
|
|
Specify the minimum fragment duration (in microseconds). Default 5000000.
|
|
|
|
|
|
|
|
@item remove_at_exit
|
|
|
|
Specify whether to remove all fragments when finished. Default 0 (do not remove).
|
|
|
|
|
|
|
|
@end table
|
|
|
|
|
2019-09-12 11:23:06 +02:00
|
|
|
@anchor{streamhash}
|
|
|
|
@section streamhash
|
|
|
|
|
|
|
|
Per stream hash testing format.
|
|
|
|
|
|
|
|
This muxer computes and prints a cryptographic hash of all the input frames,
|
|
|
|
on a per-stream basis. This can be used for equality checks without having
|
|
|
|
to do a complete binary comparison.
|
|
|
|
|
|
|
|
By default audio frames are converted to signed 16-bit raw audio and
|
|
|
|
video frames to raw video before computing the hash, but the output
|
|
|
|
of explicit conversions to other codecs can also be used. Timestamps
|
|
|
|
are ignored. It uses the SHA-256 cryptographic hash function by default,
|
|
|
|
but supports several other algorithms.
|
|
|
|
|
|
|
|
The output of the muxer consists of one line per stream of the form:
|
|
|
|
@var{streamindex},@var{streamtype},@var{algo}=@var{hash}, where
|
|
|
|
@var{streamindex} is the index of the mapped stream, @var{streamtype} is a
|
2019-10-30 11:48:44 +02:00
|
|
|
single character indicating the type of stream, @var{algo} is a short string
|
2019-09-12 11:23:06 +02:00
|
|
|
representing the hash function used, and @var{hash} is a hexadecimal number
|
|
|
|
representing the computed hash.
|
|
|
|
|
|
|
|
@table @option
|
|
|
|
@item hash @var{algorithm}
|
|
|
|
Use the cryptographic hash function specified by the string @var{algorithm}.
|
|
|
|
Supported values include @code{MD5}, @code{murmur3}, @code{RIPEMD128},
|
|
|
|
@code{RIPEMD160}, @code{RIPEMD256}, @code{RIPEMD320}, @code{SHA160},
|
|
|
|
@code{SHA224}, @code{SHA256} (default), @code{SHA512/224}, @code{SHA512/256},
|
|
|
|
@code{SHA384}, @code{SHA512}, @code{CRC32} and @code{adler32}.
|
|
|
|
|
|
|
|
@end table
|
|
|
|
|
|
|
|
@subsection Examples
|
|
|
|
|
|
|
|
To compute the SHA-256 hash of the input converted to raw audio and
|
|
|
|
video, and store it in the file @file{out.sha256}:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f streamhash out.sha256
|
|
|
|
@end example
|
|
|
|
|
|
|
|
To print an MD5 hash to stdout use the command:
|
|
|
|
@example
|
|
|
|
ffmpeg -i INPUT -f streamhash -hash md5 -
|
|
|
|
@end example
|
|
|
|
|
|
|
|
See also the @ref{hash} and @ref{framehash} muxers.
|
|
|
|
|
2016-08-09 13:26:03 +02:00
|
|
|
@anchor{tee}
|
2013-02-09 22:50:11 +03:00
|
|
|
@section tee
|
|
|
|
|
2018-04-19 14:07:20 +02:00
|
|
|
The tee muxer can be used to write the same data to several outputs, such as files or streams.
|
|
|
|
It can be used, for example, to stream a video over a network and save it to disk at the same time.
|
2013-02-09 22:50:11 +03:00
|
|
|
|
|
|
|
It is different from specifying several outputs to the @command{ffmpeg}
|
2018-04-19 14:07:20 +02:00
|
|
|
command-line tool. With the tee muxer, the audio and video data will be encoded only once.
|
|
|
|
With conventional multiple outputs, multiple encoding operations in parallel are initiated,
|
|
|
|
which can be a very expensive process. The tee muxer is not useful when using the libavformat API
|
|
|
|
directly because it is then possible to feed the same packets to several muxers directly.
|
|
|
|
|
|
|
|
Since the tee muxer does not represent any particular output format, ffmpeg cannot auto-select
|
|
|
|
output streams. So all streams intended for output must be specified using @code{-map}. See
|
|
|
|
the examples below.
|
|
|
|
|
|
|
|
Some encoders may need different options depending on the output format;
|
|
|
|
the auto-detection of this can not work with the tee muxer, so they need to be explicitly specified.
|
|
|
|
The main example is the @option{global_header} flag.
|
|
|
|
|
|
|
|
The slave outputs are specified in the file name given to the muxer,
|
|
|
|
separated by '|'. If any of the slave name contains the '|' separator,
|
|
|
|
leading or trailing spaces or any special character, those must be
|
|
|
|
escaped (see @ref{quoting_and_escaping,,the "Quoting and escaping"
|
|
|
|
section in the ffmpeg-utils(1) manual,ffmpeg-utils}).
|
|
|
|
|
|
|
|
@subsection Options
|
2013-02-09 22:50:11 +03:00
|
|
|
|
2016-10-30 20:18:21 +02:00
|
|
|
@table @option
|
|
|
|
|
|
|
|
@item use_fifo @var{bool}
|
2018-04-19 14:07:20 +02:00
|
|
|
If set to 1, slave outputs will be processed in separate threads using the @ref{fifo}
|
2016-10-30 20:18:21 +02:00
|
|
|
muxer. This allows to compensate for different speed/latency/reliability of
|
|
|
|
outputs and setup transparent recovery. By default this feature is turned off.
|
|
|
|
|
|
|
|
@item fifo_options
|
|
|
|
Options to pass to fifo pseudo-muxer instances. See @ref{fifo}.
|
|
|
|
|
|
|
|
@end table
|
|
|
|
|
2013-07-05 19:33:30 +03:00
|
|
|
Muxer options can be specified for each slave by prepending them as a list of
|
2013-02-09 22:50:11 +03:00
|
|
|
@var{key}=@var{value} pairs separated by ':', between square brackets. If
|
|
|
|
the options values contain a special character or the ':' separator, they
|
2013-02-23 01:48:55 +03:00
|
|
|
must be escaped; note that this is a second level escaping.
|
2013-02-09 22:50:11 +03:00
|
|
|
|
2013-07-05 19:33:30 +03:00
|
|
|
The following special options are also recognized:
|
|
|
|
@table @option
|
|
|
|
@item f
|
2018-04-19 14:07:20 +02:00
|
|
|
Specify the format name. Required if it cannot be guessed from the
|
|
|
|
output URL.
|
2013-07-05 19:33:30 +03:00
|
|
|
|
|
|
|
@item bsfs[/@var{spec}]
|
|
|
|
Specify a list of bitstream filters to apply to the specified
|
2013-12-15 20:29:01 +03:00
|
|
|
output.
|
|
|
|
|
2018-04-19 14:07:20 +02:00
|
|
|
It is possible to specify to which streams a given bitstream filter
|
|
|
|
applies, by appending a stream specifier to the option separated by
|
|
|
|
@code{/}. @var{spec} must be a stream specifier (see @ref{Format
|
|
|
|
stream specifiers}).
|
|
|
|
|
|
|
|
If the stream specifier is not specified, the bitstream filters will be
|
|
|
|
applied to all streams in the output. This will cause that output operation
|
|
|
|
to fail if the output contains streams to which the bitstream filter cannot
|
|
|
|
be applied e.g. @code{h264_mp4toannexb} being applied to an output containing an audio stream.
|
|
|
|
|
|
|
|
Options for a bitstream filter must be specified in the form of @code{opt=value}.
|
|
|
|
|
|
|
|
Several bitstream filters can be specified, separated by ",".
|
|
|
|
|
2016-10-30 20:18:21 +02:00
|
|
|
@item use_fifo @var{bool}
|
|
|
|
This allows to override tee muxer use_fifo option for individual slave muxer.
|
|
|
|
|
|
|
|
@item fifo_options
|
|
|
|
This allows to override tee muxer fifo_options for individual slave muxer.
|
|
|
|
See @ref{fifo}.
|
|
|
|
|
2013-08-08 13:11:59 +03:00
|
|
|
@item select
|
|
|
|
Select the streams that should be mapped to the slave output,
|
|
|
|
specified by a stream specifier. If not specified, this defaults to
|
2018-04-19 14:07:20 +02:00
|
|
|
all the mapped streams. This will cause that output operation to fail
|
|
|
|
if the output format does not accept all mapped streams.
|
|
|
|
|
|
|
|
You may use multiple stream specifiers separated by commas (@code{,}) e.g.: @code{a:0,v}
|
2016-04-20 23:48:38 +02:00
|
|
|
|
|
|
|
@item onfail
|
|
|
|
Specify behaviour on output failure. This can be set to either @code{abort} (which is
|
|
|
|
default) or @code{ignore}. @code{abort} will cause whole process to fail in case of failure
|
|
|
|
on this slave output. @code{ignore} will ignore failure on this output, so other outputs
|
|
|
|
will continue without being affected.
|
2013-07-05 19:33:30 +03:00
|
|
|
@end table
|
|
|
|
|
2014-01-09 05:30:20 +03:00
|
|
|
@subsection Examples
|
|
|
|
|
2013-09-19 01:46:53 +03:00
|
|
|
@itemize
|
|
|
|
@item
|
|
|
|
Encode something and both archive it in a WebM file and stream it
|
2018-04-19 14:07:20 +02:00
|
|
|
as MPEG-TS over UDP:
|
2013-02-09 22:50:11 +03:00
|
|
|
@example
|
2013-02-28 21:42:21 +03:00
|
|
|
ffmpeg -i ... -c:v libx264 -c:a mp2 -f tee -map 0:v -map 0:a
|
2013-02-09 22:50:11 +03:00
|
|
|
"archive-20121107.mkv|[f=mpegts]udp://10.0.1.255:1234/"
|
|
|
|
@end example
|
|
|
|
|
2016-04-20 23:48:38 +02:00
|
|
|
@item
|
|
|
|
As above, but continue streaming even if output to local file fails
|
|
|
|
(for example local drive fills up):
|
|
|
|
@example
|
|
|
|
ffmpeg -i ... -c:v libx264 -c:a mp2 -f tee -map 0:v -map 0:a
|
|
|
|
"[onfail=ignore]archive-20121107.mkv|[f=mpegts]udp://10.0.1.255:1234/"
|
|
|
|
@end example
|
|
|
|
|
2013-09-19 01:46:53 +03:00
|
|
|
@item
|
|
|
|
Use @command{ffmpeg} to encode the input, and send the output
|
2013-08-03 15:05:13 +03:00
|
|
|
to three different destinations. The @code{dump_extra} bitstream
|
|
|
|
filter is used to add extradata information to all the output video
|
|
|
|
keyframes packets, as requested by the MPEG-TS format. The select
|
|
|
|
option is applied to @file{out.aac} in order to make it contain only
|
|
|
|
audio packets.
|
|
|
|
@example
|
2016-12-08 23:06:05 +02:00
|
|
|
ffmpeg -i ... -map 0 -flags +global_header -c:v libx264 -c:a aac
|
2018-04-19 14:07:20 +02:00
|
|
|
-f tee "[bsfs/v=dump_extra=freq=keyframe]out.ts|[movflags=+faststart]out.mp4|[select=a]out.aac"
|
2013-08-03 15:05:13 +03:00
|
|
|
@end example
|
2013-12-15 20:32:51 +03:00
|
|
|
|
|
|
|
@item
|
2018-04-19 14:07:20 +02:00
|
|
|
As above, but select only stream @code{a:1} for the audio output. Note
|
2013-12-15 20:32:51 +03:00
|
|
|
that a second level escaping must be performed, as ":" is a special
|
|
|
|
character used to separate options.
|
|
|
|
@example
|
2016-12-08 23:06:05 +02:00
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ffmpeg -i ... -map 0 -flags +global_header -c:v libx264 -c:a aac
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2018-04-19 14:07:20 +02:00
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-f tee "[bsfs/v=dump_extra=freq=keyframe]out.ts|[movflags=+faststart]out.mp4|[select=\'a:1\']out.aac"
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2013-12-15 20:32:51 +03:00
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@end example
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2013-09-19 01:46:53 +03:00
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@end itemize
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2013-08-03 15:05:13 +03:00
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2021-04-07 11:11:44 +02:00
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@section webm_chunk
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WebM Live Chunk Muxer.
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This muxer writes out WebM headers and chunks as separate files which can be
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consumed by clients that support WebM Live streams via DASH.
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@subsection Options
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This muxer supports the following options:
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@table @option
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@item chunk_start_index
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Index of the first chunk (defaults to 0).
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@item header
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Filename of the header where the initialization data will be written.
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@item audio_chunk_duration
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Duration of each audio chunk in milliseconds (defaults to 5000).
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@end table
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@subsection Example
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@example
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ffmpeg -f v4l2 -i /dev/video0 \
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-f alsa -i hw:0 \
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-map 0:0 \
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-c:v libvpx-vp9 \
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-s 640x360 -keyint_min 30 -g 30 \
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-f webm_chunk \
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-header webm_live_video_360.hdr \
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-chunk_start_index 1 \
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webm_live_video_360_%d.chk \
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-map 1:0 \
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-c:a libvorbis \
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-b:a 128k \
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-f webm_chunk \
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-header webm_live_audio_128.hdr \
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-chunk_start_index 1 \
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-audio_chunk_duration 1000 \
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webm_live_audio_128_%d.chk
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@end example
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2014-07-14 19:52:23 +03:00
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@section webm_dash_manifest
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WebM DASH Manifest muxer.
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2015-04-01 04:40:01 +02:00
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This muxer implements the WebM DASH Manifest specification to generate the DASH
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manifest XML. It also supports manifest generation for DASH live streams.
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For more information see:
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@itemize @bullet
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@item
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WebM DASH Specification: @url{https://sites.google.com/a/webmproject.org/wiki/adaptive-streaming/webm-dash-specification}
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@item
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ISO DASH Specification: @url{http://standards.iso.org/ittf/PubliclyAvailableStandards/c065274_ISO_IEC_23009-1_2014.zip}
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@end itemize
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2014-07-14 19:52:23 +03:00
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@subsection Options
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This muxer supports the following options:
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@table @option
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@item adaptation_sets
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This option has the following syntax: "id=x,streams=a,b,c id=y,streams=d,e" where x and y are the
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unique identifiers of the adaptation sets and a,b,c,d and e are the indices of the corresponding
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audio and video streams. Any number of adaptation sets can be added using this option.
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2015-04-01 04:40:01 +02:00
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@item live
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Set this to 1 to create a live stream DASH Manifest. Default: 0.
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@item chunk_start_index
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Start index of the first chunk. This will go in the @samp{startNumber} attribute
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of the @samp{SegmentTemplate} element in the manifest. Default: 0.
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@item chunk_duration_ms
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Duration of each chunk in milliseconds. This will go in the @samp{duration}
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attribute of the @samp{SegmentTemplate} element in the manifest. Default: 1000.
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@item utc_timing_url
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URL of the page that will return the UTC timestamp in ISO format. This will go
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in the @samp{value} attribute of the @samp{UTCTiming} element in the manifest.
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Default: None.
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@item time_shift_buffer_depth
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Smallest time (in seconds) shifting buffer for which any Representation is
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guaranteed to be available. This will go in the @samp{timeShiftBufferDepth}
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attribute of the @samp{MPD} element. Default: 60.
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2015-04-22 02:35:29 +02:00
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@item minimum_update_period
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Minimum update period (in seconds) of the manifest. This will go in the
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@samp{minimumUpdatePeriod} attribute of the @samp{MPD} element. Default: 0.
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2014-07-14 19:52:23 +03:00
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@end table
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@subsection Example
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@example
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ffmpeg -f webm_dash_manifest -i video1.webm \
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-f webm_dash_manifest -i video2.webm \
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-f webm_dash_manifest -i audio1.webm \
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-f webm_dash_manifest -i audio2.webm \
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-map 0 -map 1 -map 2 -map 3 \
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-c copy \
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-f webm_dash_manifest \
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-adaptation_sets "id=0,streams=0,1 id=1,streams=2,3" \
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manifest.xml
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@end example
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|
2011-01-27 00:55:53 +02:00
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@c man end MUXERS
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