---
title: kCMMetadataKeySpace_QuickTimeMetadata
framework: coremedia
role: symbol
role_heading: Global Variable
path: coremedia/kcmmetadatakeyspace_quicktimemetadata
---

# kCMMetadataKeySpace_QuickTimeMetadata

Metadata keyspace for QuickTime Metadata keys.

## Declaration

```swift
let kCMMetadataKeySpace_QuickTimeMetadata: CFString
```

## Discussion

Discussion This keyspace defines its key values to be expressed as reverse-DNS strings, which allows third parties to define their own keys in a well established way that avoids collisions.

## See Also

### Constants

- [kCMMetadataKeySpace_QuickTimeUserData](coremedia/kcmmetadatakeyspace_quicktimeuserdata.md)
- [kCMMetadataKeySpace_ISOUserData](coremedia/kcmmetadatakeyspace_isouserdata.md)
- [kCMMetadataKeySpace_iTunes](coremedia/kcmmetadatakeyspace_itunes.md)
- [kCMMetadataKeySpace_ID3](coremedia/kcmmetadatakeyspace_id3.md)
- [kCMMetadataKeySpace_Icy](coremedia/kcmmetadatakeyspace_icy.md)
- [kCMMetadataKeySpace_HLSDateRange](coremedia/kcmmetadatakeyspace_hlsdaterange.md)