---
title: isSelfContained
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avcompositiontrack/isselfcontained
---

# isSelfContained

A Boolean value that indicates whether this track references sample data only within its container file.

## Declaration

```swift
var isSelfContained: Bool { get }
```

## See Also

### Accessing track information

- [isPlayable](avfoundation/avcompositiontrack/isplayable.md)
- [isDecodable](avfoundation/avcompositiontrack/isdecodable.md)
- [isEnabled](avfoundation/avcompositiontrack/isenabled.md)
- [totalSampleDataLength](avfoundation/avcompositiontrack/totalsampledatalength.md)
- [hasMediaCharacteristic(_:)](avfoundation/avcompositiontrack/hasmediacharacteristic(_:).md)