I have a beautiful copy of OotP and am using shrink to encode and burn. I almost have it except I get coasters...the last split second end credits start right away then the Warner Bros comes on like the beginning right? that lasts for about 1-2 seconds then loops all over again. OotP is an ISO_image file i got from an AVI torrent.
luckily for you our Forum Rules allow this question - this'll be down to the way you encoded the AVI/could also be that the AVI is inferior (you get what you pay for, though in this case didn't pay for).. edit- i take it you used AVI2dvd beta (don't recall using it myself, i saw it here) - http://forums.afterdawn.com/thread_view.cfm/571740
DVD Flick is another excellent program that should do what you are looking to do...here is a guide: http://forums.afterdawn.com/thread_view.cfm/552742