I want to create a video clip by pulling a scene selection from a commercial DVD. I have DVD Player, QuickTime Player and iMovie--none of which I'm too familiar with--on my Mac PowerBook G4.
DVD Player will let me create a clip but it says, "Video clips are not saved on your computer, but DVD Player remembers...blah blah blah."
I see a lot of references to types of DVDs on this site. Do I need to know if its DVD9 or X or

and how do I find out?
Is there a way to copy the clip to my Desktop? Can I use one of my current programs to do this or is there a free download from DVD-Guides that I can use?
Thanks!!