[Dieter Ismagil]

Stumbled upon this and had to figure out how to properly export from Final Cut Pro (without any re-rendering) while displaying as 720×480 in QT. Right click on your sequence, choose “settings”. Make sure your resolution is set to 720×480, Aspect DV 3:2, and pixel Aspect Ratio set to “Square.” The pixel aspect ratio is what did it for me. As far as the Anamorphic 16:9 box, leave it unchecked if you would like the image to be displayed as squeezed in QT (this was a requirement for my delivery). If you check it, QT will display the video in the un-squeezed 16:9 aspect ratio when playing back.