Thanks a lot. This seems to have worked. dvdauthor accepted the mpeg and I made the ISO. I just need to get home from work to put a DVD in the drive and burn it. Thanks. A note for anyone else reading this, when it makes stream.yuv, it is a gigantic file. A 3 meg AVI will turn into about 300 meg yuv file. I guess this might depend on bitrate and stuff though.