HI, I have a DVD of some home video that I had sent off to have copied on to a dvd. I got it back and they stuck it on a DVD that has 7+ Gig. How can I copy that disk and burn it to a DVD on my Mac. Is there a way to compress it into a 4.7 g DVD? Can I edit it down to 4.7? Also, I have some iMovie DVD's that I made. I want to open the movies from the DVD and edit the video with iMovie. I don't have the iMovie file anymore. I figured that I can use the DVD as an archive, but I can't import the files from the DVD.