could be something to do with the copy protection. you would have to rip the dvd on your pc with smartripper and then resize it using a program like dvd2one. then you can burn to disk. you would be able to duplicate that disk because their is no protection and the files arent too big to fit ojn your dvd. as most movies are dvd 9(about 8 gig) and dvd-rs are dvd5(nearly 5 gig)