VideoPixelLayout

Remarks

Planar and subsampled, because that is what every video codec in existence produces. A decoder that handed back packed BGRA would be doing a colour conversion the GPU does for free in the sampler, on the CPU, per frame — and at 1080p60 that conversion alone is a core.

The layouts here are the ones a container can actually name. Anything more exotic — 10-bit, 4:2:2 interleaved, tiled — is a codec's internal business and is converted to one of these before it becomes a VideoFrame.

Fields and properties (6)

• Unknown

  Not a layout. What a default-constructed format has.

• Grey8

  One 8-bit luma plane, no chroma. What a depth or alpha video is.

• Yuv420Planar

  8-bit luma plus two 8-bit chroma planes at half width and half height — I420, the layout of essentially all delivered video.

• Yuv422Planar

  8-bit luma plus two chroma planes at half width and full height.

• Yuv444Planar

  8-bit luma plus two chroma planes at full resolution. No subsampling.

• Bgra8

  One plane of packed BGRA bytes. Not what a codec produces; what an uncompressed capture or a CPU conversion does.

Used by (17)

• ColourRoundTripTestsVixen.Video.Tests
• CountingFactoryVixen.Video.Tests
• StarvedDecoderVixen.Video.Tests
• StepDecoderVixen.Video.Tests
• UncompressedVideoCodecVixen.Video
• UncompressedVideoCodecFactoryVixen.Video
• VideoColourConversionVixen.Video
• VideoColourConversionTestsVixen.Video.Tests
• VideoConstantsVixen.Video.Rendering
• VideoConstantsTestsVixen.Video.Rendering.Tests
• VideoFormatVixen.Video
• VideoFrameVixen.Video
• VideoFrameTestsVixen.Video.Tests
• VideoRendererTestsVixen.Video.Rendering.Tests
• VideoTextureVixen.Video
• VideoTextureTestsVixen.Video.Tests
• WebMVideoStreamDecoderTestsVixen.Video.Tests