iPod 640x480 megui problems

After a lot of trial and error, I discovered that megui (with the help of Sharktooth's iPod 5.5G profile) is capable of producing beautiful videos that are very customizable, which will transfer properly to the iPod (. Unfortunately, certain DVDs seem to have some sort of anti-copy measures put into them, which is spoiling the megui conversions. This includes DVDs of the TV show "24" (at least the ones produced here in Japan), as well as other DVDs. I've made the deduction that if the AC3 file produced by the "DV2 Creator" in megui produces an ac3 file (from VOB) which is not a perfect 0 ms sync, the final muxed video will be many times longer (2~3 hours for a 45 minute video), and after the first 45 minutes will just be blank white video. Also, the audio makes it sound like everyone who talks is a robot. If, on the other hand, the AC3 file produced in the first step is a perfect 0 ms sync, then everything comes out perfect. Certain discs I try work fine, and others have this issue. Has anyone found a way to get around this?

workaround 

Thanks for the info Eeker. Not sure it was a decrypting issue either :) Regards