---
title: kCVPixelFormatHorizontalSubsampling
framework: corevideo
role: symbol
role_heading: Global Variable
path: corevideo/kcvpixelformathorizontalsubsampling
---

# kCVPixelFormatHorizontalSubsampling

Horizontal subsampling information for this plane (type CFNumber). Assumed to be 1 if this key is not present.

## Declaration

```swift
let kCVPixelFormatHorizontalSubsampling: CFString
```

## See Also

### Constants

- [kCVPixelFormatComponentRange](corevideo/kcvpixelformatcomponentrange.md)
- [kCVPixelFormatComponentRange_FullRange](corevideo/kcvpixelformatcomponentrange_fullrange.md)
- [kCVPixelFormatComponentRange_VideoRange](corevideo/kcvpixelformatcomponentrange_videorange.md)
- [kCVPixelFormatComponentRange_WideRange](corevideo/kcvpixelformatcomponentrange_widerange.md)
- [kCVPixelFormatContainsRGB](corevideo/kcvpixelformatcontainsrgb.md)
- [kCVPixelFormatContainsYCbCr](corevideo/kcvpixelformatcontainsycbcr.md)
- [kCVPixelFormatName](corevideo/kcvpixelformatname.md)
- [kCVPixelFormatConstant](corevideo/kcvpixelformatconstant.md)
- [kCVPixelFormatCodecType](corevideo/kcvpixelformatcodectype.md)
- [kCVPixelFormatFourCC](corevideo/kcvpixelformatfourcc.md)
- [kCVPixelFormatContainsAlpha](corevideo/kcvpixelformatcontainsalpha.md)
- [kCVPixelFormatPlanes](corevideo/kcvpixelformatplanes.md)
- [kCVPixelFormatBlockWidth](corevideo/kcvpixelformatblockwidth.md)
- [kCVPixelFormatBlockHeight](corevideo/kcvpixelformatblockheight.md)
- [kCVPixelFormatBitsPerBlock](corevideo/kcvpixelformatbitsperblock.md)