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doc/ffmpeg: clarify behaviour of -discard

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Discarding all frames is universally supported as it happens in fftools
whereas selective discarding relies on the demuxer.
This commit is contained in:
Gyan Doshi 2019-01-04 15:47:33 +05:30
parent d7ef10f16d
commit 1087b792c3
1 changed files with 4 additions and 2 deletions
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doc/ffmpeg.texi
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@ -1640,8 +1640,10 @@ This allows dumping sdp information when at least one output isn't an
rtp stream. (Requires at least one of the output formats to be rtp).
@item -discard (@emph{input})
Allows discarding specific streams or frames of streams at the demuxer.
Not all demuxers support this.
Allows discarding specific streams or frames from streams.
Any input stream can be fully discarded, using value @code{all} whereas
selective discarding of frames from a stream occurs at the demuxer
and is not supported by all demuxers.
@table @option
@item none