---
title: Composite assets
framework: AVFoundation
role: collectionGroup
role_heading: API Collection
path: avfoundation/composite-assets
---

# Composite assets

Combine tracks and segments of tracks from multiple assets into a composite asset that you can play or process.

## Topics

### Compositions

- [AVComposition](avfoundation/avcomposition.md)
- [AVCompositionTrack](avfoundation/avcompositiontrack.md)
- [AVCompositionTrackSegment](avfoundation/avcompositiontracksegment.md)

### Mutable compositions

- [AVMutableComposition](avfoundation/avmutablecomposition.md)
- [AVMutableCompositionTrack](avfoundation/avmutablecompositiontrack.md)

## See Also

### Editing

- [QuickTime movies](avfoundation/quicktime-movies.md)
- [Video effects](avfoundation/video-effects.md)
- [Audio mixing](avfoundation/audio-mixing.md)