[MPlayer-users] 3pass audio sync problem

[Renai]

hi,

wondering if anyone can help me out with a sync problem I am having. I am 
encoding files from dvd using 3 pass encoding, and the latest version of 
mplayer, 0.90. Can I also say firstly, that I am eternally grateful for 
mplayer, it has meant that I can use linux fulltime. I recommend it to 
everyone, it is one of the best pieces of software I have ever seen.

Anyway, I use the following commands:

mplayer -dumpstream -dvd 1

mencoder -ovc frameno -o frameno.avi -oac mp3lame -lameopts 
fast:preset=standard stream.dump

mencoder -oac copy -o /dev/null -ovc lavc -lavcopts 
vcodec=mpeg4:vhq:aspect=4/3:vbitrate=540:vpass=1 -vop lavcdeint stream.dump

mencoder -oac copy -o divx.avi -ovc lavc -lavcopts 
vcodec=mpeg4:vhq:aspect=4/3:vbitrate=540:vpass=2 -vop lavcdeint stream.dump

Now the problem that I am having, is that every time I play a file created 
with these commands, the video and sound are slightly out of sync, enough so 
that I can notice it, but not enough to really be annoying.

When I encode files with 2 pass encoding, using the following commands, I 
don't have the same problem.

mencoder -o /dev/null -ovc lavc -lavcopts vcodec=mpeg4:vhq:aspect=4/3:vpass=1 
-vop lavcdeint -oac copy stream.dump

mencoder -o divx.avi -ovc lavc -lavcopts vcodec=mpeg4:vhq:aspect=4/3:vpass=2 
-vop lavcdeint -oac copy stream.dump

Can anyone enlighten me as to what I am doing wrong here, or is this a 
limitation of mplayer?

thanks,

Renai LeMay