For reasons of copy protection of dvd's - applications are given no access at all to any image data from a dvd - as this would make circumventing the copy protection totally trivial...Originally Posted by Urb
even if this were not the case - the data access times, and seek times, and the use of MPEG2 - make dvd footage a dreadful choice for manipulating video.
You can use MacTheRipper ( and other programs ) to extract a usable file in a non-MPEG format.
MPEG movies are horrible.
You have no random frame access. and decode times are far too long for a multilayer program like catalyst.