I used the Doom9 guide and I finally managed to make it work (I substituted Force Film with Inverse Telecine however, since Force Film, according to the README doesn't work and when I spent 20 hours doing it, the film got screwed up (demi-interlacing)).

However, I have just one question. I've done some tests and there doesn't seem to be any diff, but according to the same readme (which was right about Force Film), using DVDDecrypter to demux audio will make it offsync.

Is this true?