doc/muxers: document animated GIF muxer.

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Clément Bœsch 2013-10-19 20:39:30 +02:00
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@ -146,6 +146,40 @@ ffmpeg -i INPUT -f framemd5 -
See also the @ref{md5} muxer. See also the @ref{md5} muxer.
@anchor{gif}
@section gif
Animated GIF muxer.
It accepts the following options:
@table @option
@item loop
Set the number of times to loop the output. Use @code{-1} for no loop, @code{0}
for looping indefinitely (default).
@item final_delay
Force the delay (expressed in centiseconds) after the last frame. Each frame
ends with a delay until the next frame. The default is @code{-1}, which is a
special value to tell the muxer to re-use the previous delay. In case of a
loop, you might want to customize this value to mark a pause for instance.
@end table
For example, to encode a gif looping 10 times, with a 5 seconds delay between
the loops:
@example
ffmpeg -i INPUT -loop 10 -final_delay 500 out.gif
@end example
Note 1: if you wish to extract the frames in separate GIF files, you need to
force the @ref{image2} muxer:
@example
ffmpeg -i INPUT -c:v gif -f image2 "out%d.gif"
@end example
Note 2: the GIF format has a very small time base: the delay between two frames
can not be smaller than one centi second.
@anchor{hls} @anchor{hls}
@section hls @section hls