---
title: assetReaderTrackOutput
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avassetreaderoutputcaptionadaptor/assetreadertrackoutput
---

# assetReaderTrackOutput

The associated asset reader track output.

## Declaration

```swift
var assetReaderTrackOutput: AVAssetReaderTrackOutput { get }
```