---
title: mediaDataStorage
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avmutablemovietrack/mediadatastorage
---

# mediaDataStorage

A storage container for the media data to be added to a track.

## Declaration

```swift
@NSCopying var mediaDataStorage: AVMediaDataStorage? { get set }
```

## See Also

### Configuring track information

- [isModified](avfoundation/avmutablemovietrack/ismodified.md)
- [alternateGroupID](avfoundation/avmutablemovietrack/alternategroupid.md)
- [sampleReferenceBaseURL](avfoundation/avmutablemovietrack/samplereferencebaseurl.md)