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Table Of Contents
Chapter 18 Exporting Using QuickTime Conversion 261
III
Classic Aperture Mode
In this mode, content appears as it did in QuickTime 7 and earlier. The video track
dimensions are respected. For example, a DV NTSC track appears as 720 x 480.
Clean Aperture Mode
An image’s clean aperture is a region of video free from transition artifacts caused by
the encoding of the signal. This is the region of video that should be displayed.
Classic: no pixel aspect
ratio correction or
aperture cropping
Edge encoding artifacts Cropped edge
(in clean aperture mode)