---
title: kCMFormatDescriptionAlphaChannelMode_PremultipliedAlpha
framework: coremedia
role: symbol
role_heading: Global Variable
path: coremedia/kcmformatdescriptionalphachannelmode_premultipliedalpha
---

# kCMFormatDescriptionAlphaChannelMode_PremultipliedAlpha

## Declaration

```swift
let kCMFormatDescriptionAlphaChannelMode_PremultipliedAlpha: CFString
```

## See Also

### Description Constants

- [kCMFormatDescriptionAlphaChannelMode_StraightAlpha](coremedia/kcmformatdescriptionalphachannelmode_straightalpha.md)
- [kCMFormatDescriptionTransferFunction_ITU_R_2100_HLG](coremedia/kcmformatdescriptiontransferfunction_itu_r_2100_hlg.md)
- [kCMFormatDescriptionTransferFunction_Linear](coremedia/kcmformatdescriptiontransferfunction_linear.md)
- [kCMFormatDescriptionTransferFunction_SMPTE_ST_2084_PQ](coremedia/kcmformatdescriptiontransferfunction_smpte_st_2084_pq.md)
- [kCMFormatDescriptionTransferFunction_sRGB](coremedia/kcmformatdescriptiontransferfunction_srgb.md)