<!--
{
  "availability" : [
    "iOS: 4.1.0 -",
    "iPadOS: 4.1.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.7.0 -",
    "tvOS: 9.0.0 -",
    "visionOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AVFoundation",
  "identifier" : "/documentation/AVFoundation/AVAssetReaderVideoCompositionOutput",
  "metadataVersion" : "0.1.0",
  "role" : "Class",
  "symbol" : {
    "kind" : "Class",
    "modules" : [
      "AVFoundation"
    ],
    "preciseIdentifier" : "c:objc(cs)AVAssetReaderVideoCompositionOutput"
  },
  "title" : "AVAssetReaderVideoCompositionOutput"
}
-->

# AVAssetReaderVideoCompositionOutput

An object that reads composited video frames from one or more tracks of an asset.

```
class AVAssetReaderVideoCompositionOutput
```

## Topics

### Creating a video composition output

[`assetReaderVideoCompositionOutputWithVideoTracks:videoSettings:`](/documentation/AVFoundation/AVAssetReaderVideoCompositionOutput/assetReaderVideoCompositionOutputWithVideoTracks:videoSettings:)

Returns a new object that reads composited video from the specified video tracks.

[`init(videoTracks:videoSettings:)`](/documentation/AVFoundation/AVAssetReaderVideoCompositionOutput/init(videoTracks:videoSettings:))

Creates an object that reads composited video frames from the specified video tracks.

### Configuring video settings

[`videoComposition`](/documentation/AVFoundation/AVAssetReaderVideoCompositionOutput/videoComposition)

The video composition to use for the output.

[`customVideoCompositor`](/documentation/AVFoundation/AVAssetReaderVideoCompositionOutput/customVideoCompositor)

A custom video compositor for the output.

### Inspecting an output

[`videoTracks`](/documentation/AVFoundation/AVAssetReaderVideoCompositionOutput/videoTracks)

The tracks from which the output reads the composited video.

[`videoSettings`](/documentation/AVFoundation/AVAssetReaderVideoCompositionOutput/videoSettings)

The video settings that the output uses.


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)