---
title: "init(URL:trackID:sourceTimeRange:targetTimeRange:)"
framework: avfoundation
role: symbol
role_heading: Initializer
path: "avfoundation/avcompositiontracksegment/init(url:trackid:sourcetimerange:targettimerange:)-9shbx"
---

# init(URL:trackID:sourceTimeRange:targetTimeRange:)

## Declaration

```swift
init(URL: URL, trackID: CMPersistentTrackID, sourceTimeRange: CMTimeRange, targetTimeRange: CMTimeRange)
```