Thanks for your advice. I now believe the 2003 edited MOV files are somehow defective. EditDV was the editing program. The video is sharp and clear but the audio is not in sync with the video, I guess due to the unusual frame rate. Audio and video are in sync on the DVD VOB files of this program, but the 720x480 image quality is lower. I guess I’ll have to upscale the DVD files instead of the MOV files. Too bad.