I had a bunch of avi's (humerous subjects) on my computer that I decided to convert to DVD's. I use WinAVI exclusively and have never had a problem. I made copies to give to a friend. I checked my copies and they work perfectly both on my computer and also my DVD player. The copies I gave to my friend will not play properly. They are out of sync. I'm assuming that it is a problem with his player. Could this be a logical conclusion? I forgot to bring them back home to check them on my player. The brand of media that I'm using is recommended by my burner and I have no problem.