My brother burned these Divx movies yesterday and I tried to watch them, but one of them would not play at all (part 1 of a movie, but part II did work) and for only about 10-15minutes of another movie 7/8 of the way through, it would constantly skip or just stop with some error that it couldn't read the disc. I cleaned the discs first-off, then gave to him to try on his computer, and they work fine. I downloaded Divx 5.05 and Nimo (which he has) and I'm still getting the same problems. So, is the question about codecs or may it have something to do with burning speed? Also, they were playing in WMP. I tried the Divx Player 2.1 too, but still didn't work.