<!--
{
  "availability" : [
    "iOS: 8.0.0 -",
    "iPadOS: 8.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.10.0 -",
    "tvOS: 9.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 6.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "CoreMedia",
  "identifier" : "/documentation/CoreMedia/CMMetadataDataTypeRegistryGetDataTypeDescription(_:)",
  "metadataVersion" : "0.1.0",
  "role" : "Function",
  "symbol" : {
    "kind" : "Function",
    "modules" : [
      "Core Media"
    ],
    "preciseIdentifier" : "c:@F@CMMetadataDataTypeRegistryGetDataTypeDescription"
  },
  "title" : "CMMetadataDataTypeRegistryGetDataTypeDescription(_:)"
}
-->

# CMMetadataDataTypeRegistryGetDataTypeDescription(_:)

Returns the data type description if it exists.

```
func CMMetadataDataTypeRegistryGetDataTypeDescription(_ dataType: CFString) -> CFString
```

## Parameters

`dataType`

Identifier of the data type to be queried.

## Return Value

The description of the requested data type.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)