Even worse, it appears other commonly used fomats like DV/DV in DV and AIC/PCM in MOV are also being relegated to this group. Files containing Animation or PNG compressed data are no longer QL compatible and now force automatic QT X v10.3 conversion as mentioned above. These formats were, by default, turned off under Lion and Mountain Lion which may indicate that Apple intends to drop even passive native support sometime in the future. Based on my tests, it appears that the Mavericks embedded QT structure no longer considers many of the legacy compression formats to be supported under Mavericks.
