[FFmpeg-user] problem with audio/video sync after conversion

Roger Pack rogerdpack2 at gmail.com
Fri Jun 22 20:13:52 CEST 2012


>> /usr/bin/ffmpeg -i infile.mp4 -f mp4 -vcodec libx264 -vpre medium -acodec libfaac -g 15 -r 15 -b:v 360k -ar 22050 -b:a 48k -async 2 -vsync 1 -s 512x288 -t 900 outfile.mp4 2>&1
>
> Have you tried with 44Khz audio?

Other possibilities:

http://www.dvxuser.com/V6/showthread.php?214956-mp4-renders-4-frames-out-of-sync
use "CBR instead of VBR" (not sure what libfaac uses).  Maybe try
another aac codec?

maybe a different version of flash player:
http://forums.adobe.com/message/4331476 and
http://forums.adobe.com/message/4367872

and "add white noise" http://forums.creativecow.net/thread/3/911682

GL.
-r


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