---
title: kCVPixelFormatBlockHeight
framework: corevideo
role: symbol
role_heading: Global Variable
path: corevideo/kcvpixelformatblockheight
---

# kCVPixelFormatBlockHeight

The height, in pixels, of the smallest byte-addressable group of pixels (type CFNumber). Assumed to be 1 if this key is not present.

## Declaration

```swift
let kCVPixelFormatBlockHeight: 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)
- [kCVPixelFormatBitsPerBlock](corevideo/kcvpixelformatbitsperblock.md)
- [kCVPixelFormatBlockHorizontalAlignment](corevideo/kcvpixelformatblockhorizontalalignment.md)