---
title: sourceURL
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avcompositiontracksegment/sourceurl
---

# sourceURL

A URL of the container file whose media this track segment presents.

## Declaration

```swift
var sourceURL: URL? { get }
```

## See Also

### Accessing segment properties

- [sourceTrackID](avfoundation/avcompositiontracksegment/sourcetrackid.md)
- [isEmpty](avfoundation/avcompositiontracksegment/isempty.md)