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
Edge encoding artifacts
(in clean aperture mode)
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.