.mpg plays fine in WMP/DIVX, but not in VirtualDUB

[Atomic Dog]

OK, so I have this .mpg file that I downloaded from Kazaa. If I just run it, it works perfectly in both Windows Media Player 9 and Divx Player. However, if I load it into VirtualDUB and simply play it, it doesn't matter what I do, what codecs I run with it, anything, it ALWAYS gradually loses sync. Consequently, I am unable to convert it to ANYTHING. Compressing it to .avi always loses sync, demuxing it always loses sync, even making a copy of the .mpg via TMPG (hence, I have the downloaded file, and another .mpg with the same exact properties and file size) results in loss of sync.

Has anyone ever came across anything like this? I ran Scan For Errors and, according to VirtualDUB, the file is perfect. No bad frames, no undecodable frames.

What would cause this? Is there ANY remedy for it?

System specs:
P4, 2.26ghz
ATI AIW Radeon 8500
512 RAM
80gb HDD (30gb free)
Windows XP
DIVX, XVID, Huffy video codecs
DIVX, Lame, Ogg, Windows Media audio codecs

Thanks.

[dark_knight_br]

Hey... I've seen something like this before...
Maybe you should try converting the video in TMPGEnc without changing the framerate.
If the video is 23,9fps, encode it again with the same 23,9fps... If you try to convert the original video to 29,97fps, it will really screw the synch.
Hope this helps...

[Atomic Dog]

Argh, tried a bunch of different frame rates, above and below, and none of them helped (some even made it worse).