[SCM] libav/experimental: Better documentation of -vsync
siretart at users.alioth.debian.org
siretart at users.alioth.debian.org
Sun Jun 30 17:05:30 UTC 2013
The following commit has been merged in the experimental branch:
commit 49553ec8657a9ff6935ee95fb166c73331fd8db5
Author: Michael Niedermayer <michaelni at gmx.at>
Date: Wed Mar 31 00:41:31 2010 +0000
Better documentation of -vsync
Originally committed as revision 22739 to svn://svn.ffmpeg.org/ffmpeg/trunk
diff --git a/doc/ffmpeg-doc.texi b/doc/ffmpeg-doc.texi
index 4a5f8d0..a2d7dc2 100644
--- a/doc/ffmpeg-doc.texi
+++ b/doc/ffmpeg-doc.texi
@@ -757,8 +757,15 @@ Repeatedly loop output for formats that support looping such as animated GIF
@item -threads @var{count}
Thread count.
@item -vsync @var{parameter}
-Video sync method. Video will be stretched/squeezed to match the timestamps,
-it is done by duplicating and dropping frames. With -map you can select from
+Video sync method.
+0 Each frame is passed with its timestamp from the demuxer to the muxer
+1 Frames will be duplicated and droped to achive exactly the requested
+ constant framerate.
+2 Frames are passed through with their timestamp or droped so as to prevent
+ 2 frames having the same timestamp
+-1 Chooses between 1 and 2 depending on muxer capabilities. This is default.
+
+With -map you can select from
which stream the timestamps should be taken. You can leave either video or
audio unchanged and sync the remaining stream(s) to the unchanged one.
@item -async @var{samples_per_second}
--
Libav/FFmpeg packaging
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