I too am having this problem: I export as a QT reference, at the highest quality, yet when I make a DVD with IDVD, the visuals get blocky when there is a lot a movement in the piece. The titles effects, graphics, all look crisp clean and great, just fast camera pans the picture starts to break up.
I am editing with MAC PRO computer FCP 6.02, the latest QT Pro.
Frustrated. Can’t find much info