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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00

Sync documentation with the current ffmpeg -h output.

patch from Víctor Paesa, wzrlpy arsystel com

Originally committed as revision 6997 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Diego Biurrun 2006-11-12 23:19:26 +00:00
parent 7b7abda3b3
commit 4386f9415e

View File

@ -158,6 +158,9 @@ Show license.
@item -h
Show help.
@item -version
Show version.
@item -formats
Show available formats, codecs, protocols, ...
@ -174,13 +177,27 @@ Overwrite output files.
Set the recording time in seconds.
@code{hh:mm:ss[.xxx]} syntax is also supported.
@item -fs limit_size
Set the file size limit.
@item -ss position
Seek to given time position in seconds.
@code{hh:mm:ss[.xxx]} syntax is also supported.
@item -itsoffset offset
Set the input time offset in seconds.
@code{[-]hh:mm:ss[.xxx]} syntax is also supported.
This option affects all the input files that follow it.
The offset is added to the timestamps of the input files.
Specifying a positive offset means that the corresponding
streams are delayed by 'offset' seconds.
@item -title string
Set the title.
@item -timestamp time
Set the timestamp.
@item -author string
Set the author.
@ -190,14 +207,20 @@ Set the copyright.
@item -comment string
Set the comment.
@item -album string
Set the album.
@item -track number
Set the track.
@item -year number
Set the year.
@item -v verbose
Control amount of logging.
@item -target type
Specify target file type ("vcd", "svcd", "dvd", "dv", "pal-vcd",
Specify target file type ("vcd", "svcd", "dvd", "dv", "dv50", "pal-vcd",
"ntsc-svcd", ... ). All the format options (bitrate, codecs,
buffer sizes) are then set automatically. You can just type:
@ -212,13 +235,17 @@ they do not conflict with the standard, as in:
ffmpeg -i myfile.avi -target vcd -bf 2 /tmp/vcd.mpg
@end example
@item -itsoffset offset
Set the input time offset in seconds.
@code{[-]hh:mm:ss[.xxx]} syntax is also supported.
This option affects all the input files that follow it.
The offset is added to the timestamps of the input files.
Specifying a positive offset means that the corresponding
streams are delayed by 'offset' seconds.
@item -dframes number
Set the number of data frames to record.
@item -scodec codec
Force subtitle codec ('copy' to copy stream).
@item -newsubtitle
Add a new subtitle stream to the current output stream.
@item -slang code
Set the ISO 639 language code (3 letters) of the current subtitle stream.
@end table
@ -227,8 +254,10 @@ streams are delayed by 'offset' seconds.
@table @option
@item -b bitrate
Set the video bitrate in bit/s (default = 200 kb/s).
@item -vframes number
Set the number of video frames to record.
@item -r fps
Set frame rate (default = 25).
Set frame rate (Hz value, fraction or abbreviation), (default = 25).
@item -s size
Set frame size. The format is @samp{wxh} (default = 160x128).
The following abbreviations are recognized:
@ -291,15 +320,22 @@ in the second pass.
@item -passlogfile file
Set two pass logfile name to @var{file}.
@item -newvideo
Add a new video stream to the current output stream.
@end table
@section Advanced Video Options
@table @option
@item -pix_fmt format
Set pixel format.
@item -g gop_size
Set the group of pictures size.
@item -intra
Use only intra frames.
@item -vdt n
Discard threshold.
@item -qscale q
Use fixed video quantizer scale (VBR).
@item -qmin q
@ -466,11 +502,23 @@ Dump video coding statistics to @file{vstats_HHMMSS.log}.
@item -vhook module
Insert video processing @var{module}. @var{module} contains the module
name and its parameters separated by spaces.
@item -top n
top=1/bottom=0/auto=-1 field first
@item -dc precision
Intra_dc_precision.
@item -vtag fourcc/tag
Force video tag/fourcc.
@item -qphist
Show QP histogram.
@item -vbsf bitstream filter
Bitstream filters available are "dump_extra", "remove_extra", "noise".
@end table
@section Audio Options
@table @option
@item -aframes number
Set the number of audio frames to record.
@item -ar freq
Set the audio sampling frequency (default = 44100 Hz).
@item -ab bitrate
@ -494,6 +542,28 @@ Example:
@example
ffmpeg -i file.mpg -vcodec copy -acodec ac3 -ab 384 test.mpg -acodec mp2 -ab 192 -newaudio
@end example
@item -alang code
Set the ISO 639 language code (3 letters) of the current audio stream.
@end table
@section Advanced Audio options:
@table @option
@item -atag fourcc/tag
Force audio tag/fourcc.
@item -absf bitstream filter
Bitstream filters available are "dump_extra", "remove_extra", "noise", "mp3comp", "mp3decomp".
@end table
@section Subtitle options:
@table @option
@item -scodec codec
Force subtitle codec ('copy' to copy stream).
@item -newsubtitle
Add a new subtitle stream to the current output stream.
@item -slang code
Set the ISO 639 language code (3 letters) of the current subtitle stream.
@end table
@section Audio/Video grab options
@ -509,6 +579,10 @@ Set television standard (NTSC, PAL (SECAM)).
Set DV1394 grab.
@item -ad device
Set audio device (e.g. @file{/dev/dsp}).
@item -grab format
Request grabbing using.
@item -gd device
Set grab device.
@end table
@section Advanced options
@ -518,24 +592,30 @@ Set audio device (e.g. @file{/dev/dsp}).
Set stream mapping from input streams to output streams.
Just enumerate the input streams in the order you want them in the output.
[input stream id] sets the (input) stream to sync against.
@item -map_meta_data outfile:infile
Set meta data information of outfile from infile.
@item -debug
Print specific debug info.
@item -benchmark
Add timings for benchmarking.
@item -hex
@item -dump
Dump each input packet.
@item -hex
When dumping packets, also dump the payload.
@item -bitexact
Only use bit exact algorithms (for codec testing).
@item -ps size
Set packet size in bits.
@item -re
Read input at native frame rate. Mainly used to simulate a grab device.
@item -loop
@item -loop_input
Loop over the input stream. Currently it works only for image
streams. This option is used for automatic FFserver testing.
@item -loop_output number_of_times
Repeatedly loop output for formats that support looping such as animated GIF
(0 will loop the output infinitely).
@item -threads count
Thread count.
@item -vsync parameter
Video sync method. Video will be stretched/squeezed to match the timestamps,
it is done by duplicating and dropping frames. With -map you can select from