[MEncoder-users] variable framerate mp4 input, audio/sync problem

Grozdan neutrino8 at gmail.com
Sat Apr 24 20:31:20 CEST 2010


On Sat, Apr 24, 2010 at 4:19 PM, Mger Zero <mgerzero at yahoo.com> wrote:
>
> I'm trying to encode mp4 video with variable framerate into dvd-format mpeg video.  However, there is audio/sync issue with the output.
>
> Here is a short-version of the command that i'm using:
> mencoder input.mp4 -mc 0 -af resample=48000:0:2:channels=2 -oac lavc -vf harddup -ovc lavc -lavcopts acodec=ac3:abitrate=192:vcodec=mpeg2video -of mpeg -mpegopts format=dvd:tsaf -ofps 30000/1001 -o output.mpg
>
> -mc 0 -vf harddup, they are the options to help keep audio/video sync, but so far it's not working for variable-framerate mp4.

Have you tried without -mc 0? it actually *disables* the A/V sync of
mencoder completely and can cause more problems than it can solve, but
I'm not sure how it behaves on VFR files

>
> Does anyone knows other ways to deal with variable-framerate videos?
>
> Thanks.
>
>
>
>
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