Whenever I go to burn my video files to a blank DVD with my Memorex DVD burner using the program Nero 7 (software came with the DVD burner), it goes all the way through with the transcoding and burning process, (which usually takes 2-6 hours) and when it's done burning, it says it has burned successfully. But when I go to test it out in a DVD player, the DVD player says "disc error" like it does when there's a blank disc in it. I tried it in a different DVD player and it did the exact same thing. Then when I assume that it just didn't burn on the disc because I must've done something wrong, I try to use the disc that I assume is still empty, to burn again, but then after the transcoding process is done, it says I need to insert a blank disc. So somehow the DVD players can't read the disc, but the DVD burner says the disc isn't blank. I've tried burning the same video files several different times, and it does the same thing every time. Only once I got it to burn a DVD that the DVD players could read and it used different video files. When the DVD player could read it, the video files I burned were WMV format, and the times when it couldn't read it, the video files were AVI format. That's the only difference I can think of. Could the fact that it's AVI format be the problem? Or do u think my DVD burner is just defective? I'd try to convert them to wmv and burn it again, but I'm afraid to ruin another recordable disc and wait 2-6 hours just to find out that wasn't the problem. I'd like to have another opinion before I do that. If anyone thinks they know what the problem could be, please don't hesitate to tell me.