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# loadTrack(withTrackID:completionHandler:)

Loads a track that contains the specified identifier.

```
func loadTrack(withTrackID trackID: CMPersistentTrackID, completionHandler: @escaping @Sendable (AVAssetTrack?, (any Error)?) -> Void)
```

## Parameters

`trackID`

The identifier of the track to load.

`completionHandler`

A callback that the system invokes after it finishes the loading request. It passes the completion handler the following parameters:

- track: The loaded track, or `nil` if no track with the specified identifier exists or if an error occurs.
- error: An error object if the request fails; otherwise, `nil`.

## Discussion

---

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