From 1087b792c37630466716c3544539c583c14489a9 Mon Sep 17 00:00:00 2001 From: Gyan Doshi Date: Fri, 4 Jan 2019 15:47:33 +0530 Subject: [PATCH] doc/ffmpeg: clarify behaviour of -discard Discarding all frames is universally supported as it happens in fftools whereas selective discarding relies on the demuxer. --- doc/ffmpeg.texi | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index 3687ab0d5c..8a36a9699d 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -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