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# kCVImageBufferYCbCrMatrixKey

A key to the YCbCr to RGB color conversion matrix for the image buffer.

```
let kCVImageBufferYCbCrMatrixKey: CFString
```

## Discussion

The color matrix value is of type <doc://com.apple.documentation/documentation/CoreFoundation/CFString>. It indicates the type of conversion matrix Core Video uses when it converts image buffer data from the YCbCr color space to the RGB color space. See [Image Buffer YCbCr Matrix Constants](/documentation/CoreVideo/image-buffer-ycbcr-matrix-constants) for more information.

---

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