---
title: kCMFormatDescriptionExtension_FormatName
framework: coremedia
role: symbol
role_heading: Global Variable
path: coremedia/kcmformatdescriptionextension_formatname
---

# kCMFormatDescriptionExtension_FormatName

## Declaration

```swift
let kCMFormatDescriptionExtension_FormatName: CFString
```

## See Also

### Description Extension Constants

- [kCMFormatDescriptionExtension_AlphaChannelMode](coremedia/kcmformatdescriptionextension_alphachannelmode.md)
- [kCMFormatDescriptionExtension_AlternativeTransferCharacteristics](coremedia/kcmformatdescriptionextension_alternativetransfercharacteristics.md)
- [kCMFormatDescriptionExtension_AmbientViewingEnvironment](coremedia/kcmformatdescriptionextension_ambientviewingenvironment.md)
- [kCMFormatDescriptionExtension_AuxiliaryTypeInfo](coremedia/kcmformatdescriptionextension_auxiliarytypeinfo.md)
- [kCMFormatDescriptionExtension_BitsPerComponent](coremedia/kcmformatdescriptionextension_bitspercomponent.md)
- [kCMFormatDescriptionExtension_BytesPerRow](coremedia/kcmformatdescriptionextension_bytesperrow.md)
- [kCMFormatDescriptionExtension_ChromaLocationBottomField](coremedia/kcmformatdescriptionextension_chromalocationbottomfield-swift.var.md)
- [kCMFormatDescriptionExtension_ChromaLocationTopField](coremedia/kcmformatdescriptionextension_chromalocationtopfield-swift.var.md)
- [kCMFormatDescriptionExtension_CleanAperture](coremedia/kcmformatdescriptionextension_cleanaperture-swift.var.md)
- [kCMFormatDescriptionExtension_ColorPrimaries](coremedia/kcmformatdescriptionextension_colorprimaries-swift.var.md)
- [kCMFormatDescriptionExtension_ContainsAlphaChannel](coremedia/kcmformatdescriptionextension_containsalphachannel.md)
- [kCMFormatDescriptionExtension_ContentLightLevelInfo](coremedia/kcmformatdescriptionextension_contentlightlevelinfo.md)
- [kCMFormatDescriptionExtension_Depth](coremedia/kcmformatdescriptionextension_depth.md)
- [kCMFormatDescriptionExtension_FieldCount](coremedia/kcmformatdescriptionextension_fieldcount-swift.var.md)
- [kCMFormatDescriptionExtension_FieldDetail](coremedia/kcmformatdescriptionextension_fielddetail-swift.var.md)