---
title: AVAssetTrack.AssociationType
framework: avfoundation
role: symbol
role_heading: Structure
path: avfoundation/avassettrack/associationtype
---

# AVAssetTrack.AssociationType

Constants that define track association types.

## Declaration

```swift
struct AssociationType
```

## Topics

### Track association types

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

### Initializers

- [init(rawValue:)](avfoundation/avassettrack/associationtype/init(rawvalue:).md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)