Enum ChromaFormat

Namespace

Egami.Pixels

Assembly

Egami.dll

How a YuvRaster stores chroma: at what resolution against luma, or not at all.

public enum ChromaFormat

Fields

Yuv400 = 3

Luma only, with no chroma planes: a gray picture, such as a gray JPEG or monochrome AV1.

Yuv410 = 5

Chroma at a quarter of the width and a quarter of the height of luma, as old codecs such as Indeo (YVU9) store it.

Yuv411 = 4

Chroma at a quarter of the width and the full height of luma, as NTSC DV and some capture cards store it.

Yuv420 = 0

Chroma at half the width and half the height of luma, as most video, lossy WebP and most JPEG files store it.

Yuv422 = 1

Chroma at half the width and the full height of luma.

Yuv444 = 2

Chroma at the full size of luma.

Examples

// A 1080p frame as video stores it: full-size luma, chroma at half width and height, BT.709 at limited range.
using YuvRaster<byte> frame = YuvRaster.Create(1920, 1080, ChromaFormat.Yuv420, YuvColor.Bt709Limited);

// 10-bit HDR planes hold samples 0 to 1023 in ushorts; an alpha plane is optional.
using YuvRaster<ushort> hdr = YuvRaster.Create(3840, 2160, ChromaFormat.Yuv420, 10, YuvColor.Bt2020Limited, alpha: true);
Console.WriteLine($"Chroma planes are {frame.U!.Width}×{frame.U.Height}");