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Andreas Rheinhardt a728f4af24 avformat/movenc: Fix segfault when remuxing rtp hint stream 
When remuxing an rtp hint stream (or any stream with the tag "rtp "),
the mov muxer treats this as one of the rtp hint tracks it creates
internally when ordered to do so; yet this track lacks the
AVFormatContext for the hinting rtp muxer, leading to segfaults in
mov_write_udta_sdp() if a "trak" atom is written for this stream; if not,
the stream's codecpar is freed by mov_free() as if the mov muxer owned
it (it does for the internally created "rtp " tracks), but without
resetting st->codecpar, leading to double-frees lateron. This commit
therefore ignores said tag which makes rtp hint streams unremuxable.

This fixes tickets #8181 and #8186.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit 22c3cd1760)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2021-10-31 18:56:48 +01:00
compat
doc Update for 2.8.18 2021-10-21 00:01:06 +02:00
libavcodec avcodec/flac_parser: Consider AV_INPUT_BUFFER_PADDING_SIZE 2021-10-22 22:50:33 +02:00
libavdevice
libavfilter avfilter/vf_yadif: Fix handing of tiny images 2021-10-17 21:34:53 +02:00
libavformat avformat/movenc: Fix segfault when remuxing rtp hint stream 2021-10-31 18:56:48 +01:00
libavresample
libavutil avutil/common: Add FF_PTR_ADD() 2021-10-17 21:34:53 +02:00
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libswresample
libswscale swscale/slice: Fix wrong return on error 2021-10-17 21:34:53 +02:00
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README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • ffserver is a multimedia streaming server for live broadcasts.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.