[MPlayer-users] Converting AVIs

Bradley Alexander storm at tux.org
Sat Sep 7 18:39:01 CEST 2002

I'm still running into issues with converting DivX5.0 avis created with
vcr to high quality 700MB avis.

Originally (0.90pre5 and before), I would do a three-pass method

mencoder $infile -ovc frameno -oac copy -o frameno.avi

mencoder ${infile} -ovc lavc -lavcopts \
vcodec=mpeg4:vbitrate=${bitrate}:vhq:vqmin=1:vqmax=31:vpass=1 -npp lb \
-oac copy -o ${outfile}

mencoder ${infile} -ovc lavc -lavcopts \
vcodec=mpeg4:vbitrate=${bitrate}:vhq:vqmin=1:vqmax=31:vpass=2 -npp lb \
-oac copy -o ${outfile}

And get generally good results (actually at this point, I was converting
from DivX ;-) low-motion coming out of vcr).

At the pre6 mark (and also with pre7), if I do a 3-pass postprocessing,
I get the right size output, but the sound is out of sync and gets
farther out over the course of the movie. If I do a 2-pass without
specifying the bitrate, the movie ends up roughly 3x greater:

-rw-r--r--    1 storm    storm        618M Aug 24 22:53
-rw-r--r--    1 storm    storm        1.9G Sep  7 04:34

Although the sound is correctly synced. Can someone tell me how to get
the proper sized files with the sound synced right?

Bradley M. Alexander                |   storm [at] debian.org
Debian Developer, Security Engineer |   storm [at] tux.org
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