[MEncoder-users] Convert a MKV with H264 and AAC to anything other than a mkv container and without A-V Sync issues

[Matthias Hopf]

On Mar 04, 07 23:12:12 +0100, Pierre Grimaud wrote:
> I have h264+AC3 over here and am not yet been able to convert it to anything
> without A-V sync issues. Very disturbing. Even with dumping both streams and
> trying to rejoin them... I've got to try to extract both streams with some
> other player - ie: VLC and see if I can get anything out of it.

If you don't care about the audio format (and mp3 is enough for you),
transcoding with -oac mp3lame typically works. But this isn't good
enough for me.

So far the only possibility for me was to extract the ac3 stream
(mplayer -dumpaudio -dumpfile bla.ac3 in.mkv), to transcode the stream
without a/v synchronization *but* with audio transcoding (mencoder -oac
mp3lame -mc 0 -noskip ...) and to muliplex afterwards (typically chose
VirtualDub on M$ for that, but mencoder -ovc copy *might* work as well).

And praying that everything works out fine. Most times audio needs a
constant shift, but is in sync after that constant has been figured out.

I didn't have time to file a decent bug report yet, though.

CU

Matthias

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