Commit 1087b792 authored by Gyan Doshi's avatar Gyan Doshi

doc/ffmpeg: clarify behaviour of -discard

Discarding all frames is universally supported as it happens in fftools
whereas selective discarding relies on the demuxer.
parent d7ef10f1
...@@ -1640,8 +1640,10 @@ This allows dumping sdp information when at least one output isn't an ...@@ -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). rtp stream. (Requires at least one of the output formats to be rtp).
@item -discard (@emph{input}) @item -discard (@emph{input})
Allows discarding specific streams or frames of streams at the demuxer. Allows discarding specific streams or frames from streams.
Not all demuxers support this. 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 @table @option
@item none @item none
......
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