Problem ripping a movie to avi with AutoGK, fast motion audio/video

[Mr. SoAndSo]

I have a DVD that appears to be the only film I have issue with on this. I rip it with DVD Decrypter in IFO mode and I put it in AutoGK with external subtitles, AC3 2ch sound, video and audio settings on 'auto' and the size being 2 CDs. What happens is that after it converts the file comes out to around 1.2GB instead of around 1.4, one CD is around 700MB while the other is over 500MB and the video/sound move in fast motion with the sound completely out of sync. I don't know if the problem is with the DVD itself (maybe they processed it differently?) or something wrong wiht my computer. This is the only DVD where I've ever come across this problem. Do you have any idea on what's causing this and if so how to fix it?

[Baldrick]

Try rip to the hdd with latest dvdfab decrypter and then use autogk.
or
Try convert to avi xvid using another converter like fairuse wizard.