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# AVAssetTrackGroupOutputHandling

A type that specifies policies for how an export session processes alternate tracks in a track group.

```
struct AVAssetTrackGroupOutputHandling
```

## Topics

### Policies

[`AVAssetTrackGroupOutputHandlingNone`](/documentation/AVFoundation/AVAssetTrackGroupOutputHandling/AVAssetTrackGroupOutputHandlingNone)

A policy that doesn’t pass through alternate audio tracks from the source asset during export.

[`preserveAlternateTracks`](/documentation/AVFoundation/AVAssetTrackGroupOutputHandling/preserveAlternateTracks)

A policy that passes through alternate audio tracks from the source asset during export.

[`AVAssetTrackGroupOutputHandlingDefaultPolicy`](/documentation/AVFoundation/AVAssetTrackGroupOutputHandling/AVAssetTrackGroupOutputHandlingDefaultPolicy)

The default track group output handling policy.

### Initializers

[`init(rawValue:)`](/documentation/AVFoundation/AVAssetTrackGroupOutputHandling/init(rawValue:))

Creates track group output handling structure with a raw value.


---

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