---
title: CMMediaType
framework: coremedia
role: symbol
role_heading: Type Alias
path: coremedia/cmmediatype
---

# CMMediaType

Constants that represent media types.

## Declaration

```swift
typealias CMMediaType = FourCharCode
```

## Topics

### Constants

- [kCMMediaType_Audio](coremedia/kcmmediatype_audio.md)
- [kCMMediaType_AuxiliaryPicture](coremedia/kcmmediatype_auxiliarypicture.md)
- [kCMMediaType_ClosedCaption](coremedia/kcmmediatype_closedcaption.md)
- [kCMMediaType_Metadata](coremedia/kcmmediatype_metadata.md)
- [kCMMediaType_Muxed](coremedia/kcmmediatype_muxed.md)
- [kCMMediaType_Subtitle](coremedia/kcmmediatype_subtitle.md)
- [kCMMediaType_Text](coremedia/kcmmediatype_text.md)
- [kCMMediaType_TimeCode](coremedia/kcmmediatype_timecode.md)
- [kCMMediaType_Video](coremedia/kcmmediatype_video.md)
- [kCMMediaType_TaggedBufferGroup](coremedia/kcmmediatype_taggedbuffergroup.md)

## See Also

### Data Types

- [CMVideoDimensions](coremedia/cmvideodimensions.md)
- [CMAudioFormatDescriptionMask](coremedia/cmaudioformatdescriptionmask.md)
- [CMAudioCodecType](coremedia/cmaudiocodectype.md)
- [CMVideoCodecType](coremedia/cmvideocodectype.md)
- [CMTextDisplayFlags](coremedia/cmtextdisplayflags.md)
- [CMTextJustificationValue](coremedia/cmtextjustificationvalue.md)
- [Media Type Constants](coremedia/media-type-constants.md)
- [Muxed Stream Types](coremedia/muxed-stream-types.md)
- [Audio Codec Types](coremedia/audio-codec-types.md)