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kVTCompressionPropertyKey_CleanAperture

The clean aperture for encoded frames.

Declaration

let kVTCompressionPropertyKey_CleanAperture: CFString

Discussion

If a video encoder enforces specific clean apertures, this property is read-only (VTSessionSetProperty(_:key:value:) will return kVTPropertyReadOnlyErr). The clean aperture will be set on the format description for output samples, and may affect source frame scaling. NULL is a valid value for this property, meaning that the clean aperture is the full width and height.

See Also

Clean Aperture and Pixel Aspect Ratio