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)
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Part III
Output
In this mode, the video track is cropped to the Clean aperture mode and scaled
according to the track’s pixel aspect ratio. For example, a 4:3 DV NTSC track appears as
640 x 480; a 16:9 DV NTSC track appears as 853 x 480.