---
title: sidecarURL
framework: avfoundation
role: symbol
role_heading: Type Property
path: avfoundation/avpartialasyncproperty/sidecarurl
---

# sidecarURL

The sidecar URL used by the MediaExtension. The sidecar URL is returned only if the MediaExtension format reader supports sidecar files, and implements this property [MEFileInfo setSidecarFilename:]. Will return nil otherwise.

## Declaration

```swift
static var sidecarURL: AVAsyncProperty<Root, URL?> { get }
```

## See Also

### Describing a property

- [description](avfoundation/avpartialasyncproperty/description.md)