sync problem

[Alexandros]

I have a huffyuv 30fps avi file, i convert it to MPEG2 using CCE, I extract the audio with VirtualDubMod and convert it to MP2 using besweet, when I test the encoded audio and the video they are out of sync, I think that it can be a fps problem because im encoding at 29.97fps and i see that the audio is more out of sync in the end that in the middle of the video.
I try to use besweet to convert from 30000 to 29970 and it doesnt start it just show the input/output information but doesnt do anything.
Any ideas of how can i fix this?
thanks and sorry for my english

[jshumate]

Is the audio file in the AVI actually a VBR (Variable Bit Rate) MP3? This is often the cause of audio sync problems. If you don't have a program called Gspot, you can download and install the latest version from:
http://www.divx-digest.com/software/gspot.html
Install it and open your AVI file with it and it will tell you if you have VBR MP3 audio.

If you have VBR MP3 audio, extract the audio with VirtualDubMod, but convert it to WAV format. Then you can use the WAV file and convert it to MP2 audio if you want.