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# loadSegment(forTrackTime:completionHandler:)

Loads a segment with a target time range that contains, or is closest to, the specified track time.

```
func loadSegment(forTrackTime trackTime: CMTime, completionHandler: @escaping @Sendable (AVAssetTrackSegment?, (any Error)?) -> Void)
```

## Parameters

`trackTime`

The track time of the segment to load.

`completionHandler`

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

- segment: The loaded track segment, or `nil` if an error occurs.
- error: An error object if the request fails; otherwise, `nil`.

## Discussion

If the specified track time doesn’t map to a sample presentation time, the system returns the segment with the closest matching time.

---

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