I also need to convert a dvd to ntsc but am having problems doing it. I have found ways to do it if my video was an avi file or an mpg file, but i dont have it in that format. I have it iso format, img format, and the dvd format in the video_ts and audio_ts folderrs. I can find no way to convert to ntsc from here, and i dont know how well it would do to convert to avi then do it with all the chapters in the dvd. Anyone have any ideas?