- VTCompressionPropertyKey - AllowFrameReordering 
- AllowOpenGop 
- AllowTemporalCompression 
- AlphaChannelMode 
- AspectRatio16x9 
- AverageBitRate 
- BaseLayerBitRateFraction 
- BaseLayerFrameRate 
- BaseLayerFrameRateFraction 
- CleanAperture 
- ColorPrimaries 
- ConstantBitRate 
- ContentLightLevelInfo 
- DataRateLimits 
- Depth 
- EnableLowLatencyRateControl 
- EnableLtr 
- EncoderId 
- EstimatedAverageBytesPerFrame 
- ExpectedDuration 
- ExpectedFrameRate 
- FieldCount 
- FieldDetail 
- GammaLevel 
- H264EntropyMode 
- HdrMetadataInsertionMode 
- ICCProfile 
- MasteringDisplayColorVolume 
- MaxAllowedFrameQP 
- MaxFrameDelayCount 
- MaxH264SliceBytes 
- MaximizePowerEfficiency 
- MaxKeyFrameInterval 
- MaxKeyFrameIntervalDuration 
- MinAllowedFrameQP 
- MoreFramesAfterEnd 
- MoreFramesBeforeStart 
- MultiPassStorage 
- NumberOfPendingFrames 
- OutputBitDepth 
- PixelAspectRatio 
- PixelBufferPoolIsShared 
- PixelTransferProperties 
- PreserveAlphaChannel 
- PreserveDynamicHdrMetadata 
- PrioritizeEncodingSpeedOverQuality 
- ProfileLevel 
- ProgressiveScan 
- Quality 
- RealTime 
- ReferenceBufferCount 
- SourceFrameCount 
- SupportsBaseFrameQP 
- TargetQualityForAlpha 
- TransferFunction 
- UsingGpuRegistryId 
- UsingHardwareAcceleratedVideoEncoder 
- VideoEncoderPixelBufferAttributes 
- YCbCrMatrix 
 
net9.0-ios17.2
    namespace VideoToolbox
{
    [SupportedOSPlatform("maccatalyst")]
    [SupportedOSPlatform("ios")]
    [SupportedOSPlatform("macos")]
    [SupportedOSPlatform("tvos")]
    public static class VTCompressionPropertyKey
    {
        [Field("kVTCompressionPropertyKey_MultiPassStorage", "VideoToolbox")]
        [SupportedOSPlatform("maccatalyst")]
        [SupportedOSPlatform("ios")]
        [SupportedOSPlatform("macos")]
        [SupportedOSPlatform("tvos")]
        public static NSString! MultiPassStorage
        {
            [SupportedOSPlatform("maccatalyst")]
            [SupportedOSPlatform("ios")]
            [SupportedOSPlatform("macos")]
            [SupportedOSPlatform("tvos")]
            get;
        }
    }
}
            | .NET | 6.07.08.09.0 | 
|---|---|
| Information specific to net9.0 | |
| Platforms | This API is only available when you target a specific platform: | 
| iOS | 10.010.110.210.311.011.111.211.311.412.012.112.212.312.413.013.113.213.313.413.513.614.014.114.214.314.414.515.015.215.416.016.116.216.417.017.2 | 
| Mac Catalyst | 13.113.213.313.413.514.214.314.414.515.015.215.416.116.216.417.017.2 | 
| macOS | 10.1410.1510.1611.011.111.211.312.012.112.313.013.113.314.014.2 | 
| tvOS | 10.010.110.211.011.111.211.311.412.012.112.212.312.413.013.213.313.414.014.214.314.414.515.015.215.416.016.116.417.017.2 | 
| Information specific to net9.0-ios17.2 | |
| Assembly | Microsoft.iOS , Version=17.2.0.0, PublicKeyToken=84e04ff9cfb79065 | 
| Referencing | The API is automatically referenced. | 
| Platform Restrictions | The property getter is only supported on the following platforms: 
 | 
- Built-in API
- Package-provided API