CMVideoFormatDescriptionGetPresentationDimensions(_:usePixelAspectRatio:useCleanAperture:)
Returns the dimensions after taking the pixel aspect ratio and clean aperture into account.
Declaration
func CMVideoFormatDescriptionGetPresentationDimensions(_ videoDesc: CMVideoFormatDescription, usePixelAspectRatio: Bool, useCleanAperture: Bool) -> CGSizeParameters
- videoDesc:
CMVideoFormatDescriptionbeing interrogated. - usePixelAspectRatio:
Compute the dimensions maintaining pixel aspect ratio.
- useCleanAperture:
Compute the dimensions using the clean aperture.
Discussion
Pixel aspect ratio is used to adjust the width, leaving the height alone.
See Also
Working with Video Descriptions
CMImageDescriptionFlavorCMVideoFormatDescriptionCreate(allocator:codecType:width:height:extensions:formatDescriptionOut:)CMVideoFormatDescriptionCreateForImageBuffer(allocator:imageBuffer:formatDescriptionOut:)CMVideoFormatDescriptionGetCleanAperture(_:originIsAtTopLeft:)CMVideoFormatDescriptionGetDimensions(_:)CMVideoFormatDescriptionGetExtensionKeysCommonWithImageBuffers()CMVideoFormatDescriptionMatchesImageBuffer(_:imageBuffer:)CMVideoFormatDescriptionCreateFromH264ParameterSets(allocator:parameterSetCount:parameterSetPointers:parameterSetSizes:nalUnitHeaderLength:formatDescriptionOut:)CMVideoFormatDescriptionCreateFromHEVCParameterSets(allocator:parameterSetCount:parameterSetPointers:parameterSetSizes:nalUnitHeaderLength:extensions:formatDescriptionOut:)CMVideoFormatDescriptionGetH264ParameterSetAtIndex(_:parameterSetIndex:parameterSetPointerOut:parameterSetSizeOut:parameterSetCountOut:nalUnitHeaderLengthOut:)CMVideoFormatDescriptionCopyAsBigEndianImageDescriptionBlockBuffer(allocator:videoFormatDescription:stringEncoding:flavor:blockBufferOut:)CMVideoFormatDescriptionCreateFromBigEndianImageDescriptionBlockBuffer(allocator:bigEndianImageDescriptionBlockBuffer:stringEncoding:flavor:formatDescriptionOut:)CMVideoFormatDescriptionCreateFromBigEndianImageDescriptionData(allocator:bigEndianImageDescriptionData:size:stringEncoding:flavor:formatDescriptionOut:)CMSwapBigEndianImageDescriptionToHost(_:_:)CMSwapHostEndianImageDescriptionToBig(_:_:)