I know this question has been asked a million times, but I was asked to copy a work DVD. I used a relatively known freeware program to extract the whole disc and got the typical Audio TS and Video TS folders. Once I got those folders, I popped a DVD-R in my drive, copied the folders to the disc, and burned. Once finished, Apple's DVD player fired up, but immediately said "disc not supported" (and yes, the "original" disc played fine). For the fun of it, I popped the copied disc into the DVD player in the living room and it played fine. Why did the Apple player not recognize it? Also, did I need an extractor program or could I have simply copied the audio and video TS folders to my hard drive (followed by moving them to a disc to burn)? Many thanks!