---
title: AVMutableComposition
framework: avfoundation
role: collectionGroup
role_heading: API Collection
path: avfoundation/avmutablecomposition-async-properties
---

# AVMutableComposition

Asynchronous properties for mutable compositions.

## Topics

### Loading tracks

- [tracks](avfoundation/avpartialasyncproperty/tracks-92p4a.md)

## See Also

### Loading properties

- [AVAsset](avfoundation/avasset-async-properties.md)
- [AVAssetTrack](avfoundation/avassettrack-async-properties.md)
- [AVURLAsset](avfoundation/avurlasset-async-properties.md)
- [AVFragmentedAsset](avfoundation/avfragmentedasset-async-properties.md)
- [AVMetadataItem](avfoundation/avmetadataitem-async-properties.md)
- [AVComposition](avfoundation/avcomposition-async-properties.md)
- [AVMovie](avfoundation/avmovie-async-properties.md)
- [AVMutableMovie](avfoundation/avmutablemovie-async-properties.md)
- [AVFragmentedMovie](avfoundation/avfragmentedmovie-async-properties.md)