---
title: kVTCompressionPropertyKey_AlphaChannelMode
framework: videotoolbox
role: symbol
role_heading: Global Variable
path: videotoolbox/kvtcompressionpropertykey_alphachannelmode
---

# kVTCompressionPropertyKey_AlphaChannelMode

## Declaration

```swift
let kVTCompressionPropertyKey_AlphaChannelMode: CFString
```

## Topics

### Modes

- [kVTAlphaChannelMode_StraightAlpha](videotoolbox/kvtalphachannelmode_straightalpha.md)
- [kVTAlphaChannelMode_PremultipliedAlpha](videotoolbox/kvtalphachannelmode_premultipliedalpha.md)

## See Also

### Color

- [kVTCompressionPropertyKey_ColorPrimaries](videotoolbox/kvtcompressionpropertykey_colorprimaries.md)
- [kVTCompressionPropertyKey_ContentLightLevelInfo](videotoolbox/kvtcompressionpropertykey_contentlightlevelinfo.md)
- [kVTCompressionPropertyKey_GammaLevel](videotoolbox/kvtcompressionpropertykey_gammalevel.md)
- [kVTCompressionPropertyKey_ICCProfile](videotoolbox/kvtcompressionpropertykey_iccprofile.md)
- [kVTCompressionPropertyKey_MasteringDisplayColorVolume](videotoolbox/kvtcompressionpropertykey_masteringdisplaycolorvolume.md)
- [kVTCompressionPropertyKey_TransferFunction](videotoolbox/kvtcompressionpropertykey_transferfunction.md)
- [kVTCompressionPropertyKey_YCbCrMatrix](videotoolbox/kvtcompressionpropertykey_ycbcrmatrix.md)