I allready converted some avi's to DVd without a problem. This is what i do:
I scan the avi with VDUb for bad frames and i extract to sound to an uncompressed wav file. I encode to dvd mpeg with TMPGenc.
But i had the following problem with the last two movies: When i checked the length of the avi (no bad frames in it with vdub and vdub-mp3) and the length of the extracted wav (extracted it with vdub and goldwave), there was a small differece of about 1 to 2 seconds. When i encode the file with this the sound isn't in sync.

So why that difference? And how to solve it?