[MPlayer-users] Support of ogmtools inside mencoder?[was: Ther is a way to encode directly in ogm format]

D Richard Felker III dalias at aerifal.cx
Tue May 6 22:36:08 CEST 2003

On Tue, May 06, 2003 at 10:17:52PM +0300, Jan Knutar wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> > shed more light on this?  Anyways, I'd miss the frameno pass if it
> > were removed; I like using lame vbr instead of abr or cbr and it's
> I second that. You also get a speed benefit from doing it in 3 passes, 
> not having to do audio on the last 2.

You don't have to do audio on the last 2. Just use -oac pcm on the
first video pass, since you'll be throwing it away anyway. If you're
low on disk space and don't want to use -o /dev/null, you can use
-srate 8000 -channels 1 to make the pcm audio super small (and
horrible sounding). And, if you're going to ogmmerge it with vorbis
audio later anyway, you can do -oac pcm on BOTH video passes.

BTW, about the "improved" a/v sync with 3pass. I'm assuming when you
tried 2pass encoding to prepare for ogmmerge, you used -nosound. Never
use -nosound, as it will break a/v sync. With -oac pcm, a/v sync
should be as good as or better than with 3pass mode.


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