X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=doc%2Fffmpeg.texi;h=68fd12f1582ea179bc0490f321e7b9111d846b80;hb=9236f7b5a23b4907f7b2bf6346ecd88e6d76f1e0;hp=0f6c093493bd3238b39d79c055b4aeae19bebe89;hpb=69de229bb8818e97c88ad34840c9bd4a6854b647;p=ffmpeg

diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi
index 0f6c093493b..68fd12f1582 100644
--- a/doc/ffmpeg.texi
+++ b/doc/ffmpeg.texi
@@ -1146,6 +1146,30 @@ requested by @command{ffserver}.
 The option is intended for cases where features are needed that cannot be
 specified to @command{ffserver} but can be to @command{ffmpeg}.
 
+@item -discard (@emph{input})
+Allows discarding specific streams or frames of streams at the demuxer.
+Not all demuxers support this.
+
+@table @option
+@item none
+Discard no frame.
+
+@item default
+Default, which discards no frames.
+
+@item noref
+Discard all non-reference frames.
+
+@item bidir
+Discard all bidirectional frames.
+
+@item nokey
+Discard all frames excepts keyframes.
+
+@item all
+Discard all frames.
+@end table
+
 @end table
 
 As a special exception, you can use a bitmap subtitle stream as input: it