From ecad89e3edb64da662ae06a9d37c1fa84b02fadb Mon Sep 17 00:00:00 2001 From: Lou Logan <l...@lrcd.com> Date: Thu, 28 Aug 2014 16:26:11 -0800 Subject: [PATCH] doc/demuxers: document gif demuxer
Signed-off-by: Lou Logan <l...@lrcd.com> --- New patch addressing comments from Timothy and Clément. doc/demuxers.texi | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/doc/demuxers.texi b/doc/demuxers.texi index d51b9d0..2c9d142 100644 --- a/doc/demuxers.texi +++ b/doc/demuxers.texi @@ -174,6 +174,46 @@ See @url{http://quvi.sourceforge.net/} for more information. FFmpeg needs to be built with @code{--enable-libquvi} for this demuxer to be enabled. +@section gif + +Animated GIF demuxer. + +It accepts the following options: + +@table @option +@item min_delay +Set the minimum valid delay between frames in hundredths of seconds. +Range is 0 to 6000. Default value is 2. + +@item default_delay +Set the default delay between frames in hundredths of seconds. +Range is 0 to 6000. Default value is 10. + +@item ignore_loop +GIF files can be set to loop infinitely or up to a certain number of +times. + +If @option{ignore_loop} is set to 1, then the loop setting from the +input will be ignored and looping will not occur. + +If set to 0, then looping will occur and will cycle the number of times +the GIF dictates. + +This option prevents a GIF stream from looping forever. + +Default value is 1. +@end table + +For example, with the overlay filter, place an infinitely looping GIF +over another video: +@example +ffmpeg -i input.mp4 -ignore_loop 0 -i input.gif -filter_complex overlay=shortest=1 out.mkv +@end example + +Note that in the above example the shortest option for overlay filter is +used to end the output video at the length of the shortest input file, +which in this case is @file{input.mp4} as the GIF loops infinitely. + @section image2 Image file demuxer. -- 2.0.4 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel