AC3 convert to DVD issue: out of sync

Hi!

I’m having an issue that’s driving me crazy. Everytime I try to convert a .AVI file with AC3 Audio in a DVD format, the result is always out of sync of 5 seconds approximately. I did try to convert in .MPG and .MOV, I have the same problem.

I’m using AVS Video Converter (registered). I did download and install AC3filter.

Any suggestion? What am I missing? Is there a savior?

Thanks in advance.

Dante