I'm exporting the videos primarily in a DV Stream format. I've also use a QuickTime Reference. Both of these files are viewable in QuickTime and appear to be perfect. I'm also "previewing" them in DVDa using the Preview option. The videos appear to be perfect in the preview mode. It's really strange. I've also tried viewing the disc on different TV/DVD players to make sure it wasn't just the set I had in my office. No difference there.