VideoToolbox macOS 10.14 to 10.15 API Differences

VTCompressionProperties.h

Added kVTCompressionPropertyKey_TargetQualityForAlpha

Added kVTCompressionPropertyKey_UsingGPURegistryID

Added kVTCompressionPropertyKey_GammaLevel

Added kVTCompressionPropertyKey_AlphaChannelMode

Added kVTAlphaChannelMode_StraightAlpha

Added kVTAlphaChannelMode_PremultipliedAlpha

VTDecompressionProperties.h

Added kVTDecompressionPropertyKey_UsingGPURegistryID

VTPixelTransferProperties.h

Added kVTPixelTransferPropertyKey_RealTime