Hi, I have a 1 hour video project that I edited in iMovie and then clicked the button to export to iDVD. I did that and then set up all of my menus in iDVD. I clicked preview and everything played fine. So next I hit burn and let the pbook sit overnight. The next morning there were no errors on screen so I played the disc. Menus work great and it starts playing fine. But then after the first two chapters, there is no video, only audio and the first frame from the chapter remains frozen on the screen. I can skip to any chapter and they all do this. I've taken it to two different regular DVD only players and they have the same problem although one DVD player wouldn't even recognize the disc. Any ideas on why I have no video and have only audio? The whole disc worked fine on preview before I burned it. Thanks a lot.