---
title: "CMFormatDescriptionGetMediaType(_:)"
framework: coremedia
role: symbol
role_heading: Function
path: "coremedia/cmformatdescriptiongetmediatype(_:)"
---

# CMFormatDescriptionGetMediaType(_:)

Returns the media type of a format description.

## Declaration

```swift
func CMFormatDescriptionGetMediaType(_ desc: CMFormatDescription) -> CMMediaType
```

## Parameters

- `desc`: A CMFormatDescription to examine.

## Return Value

Return Value A media type that identifies the format description.

## Discussion

Discussion For example, this function returns kCMMediaType_Audio for a description of an audio stream.

## See Also

### Inspecting Format Descriptions

- [CMFormatDescriptionGetMediaSubType(_:)](coremedia/cmformatdescriptiongetmediasubtype(_:).md)
- [CMFormatDescriptionGetExtension(_:extensionKey:)](coremedia/cmformatdescriptiongetextension(_:extensionkey:).md)
- [CMFormatDescriptionGetExtensions(_:)](coremedia/cmformatdescriptiongetextensions(_:).md)
- [CMFormatDescriptionGetTypeID()](coremedia/cmformatdescriptiongettypeid().md)