I created a dvd folder in DVD Studio Pro, and then I wanted to burn it to disc. So I dragged the VIDEO_TS/AUDIO_TS folders over into the burn folder and started the burn process. It took 3 hours to burn a 4.7GB disc at 16x speed, and then I discover the disc didn't even play on my set top dvd player. I tried burning another disc, and I had the same problem. I have burnt other files to disc successfully in the past. Why wont my dvd-video folders burn?