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# selectionFollower

An association between two tracks that specifies when a user selects the main track, the system should follow that selection by automatically selecting the associated track.

```
static let selectionFollower: AVAssetTrack.AssociationType
```

## Discussion

For example, a follower of an audio track could be a subtitle track in the same language. When the user chooses a language for audio, the subtitle language “follows” the audio language selection.

---

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