I do my exports through FCP. Usually, export/QuickTime movie/Current Settings or Uncompressed 8 bit, 4:2:2. I haven’t tried compressor. I did use compressor to encode a QT file to Mpeg2, but then found that iDVD didn’t seem to know what to do with it.
I’m beginning to wonder if my QuickTime application could be corrupted.
-John