---
title: metadataReferent
framework: avfoundation
role: symbol
role_heading: Type Property
path: avfoundation/avassettrack/associationtype/metadatareferent
---

# metadataReferent

An association between a metadata track and the track that it describes or annotates.

## Declaration

```swift
static let metadataReferent: AVAssetTrack.AssociationType
```

## Discussion

Discussion This track association is optional for AVAssetTrack objects with the media type metadata. When a metadata track lacks this track association, the system assumes the metadata describes or annotates the asset as a whole.

## See Also

### Track association types

- [audioFallback](avfoundation/avassettrack/associationtype/audiofallback.md)
- [chapterList](avfoundation/avassettrack/associationtype/chapterlist.md)
- [forcedSubtitlesOnly](avfoundation/avassettrack/associationtype/forcedsubtitlesonly.md)
- [selectionFollower](avfoundation/avassettrack/associationtype/selectionfollower.md)
- [timecode](avfoundation/avassettrack/associationtype/timecode.md)
- [renderMetadataSource](avfoundation/avassettrack/associationtype/rendermetadatasource.md)