---
title: isSelfContained
framework: avfoundation
role: symbol
role_heading: Type Property
path: avfoundation/avpartialasyncproperty/isselfcontained
---

# isSelfContained

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

## Declaration

```swift
static var isSelfContained: AVAsyncProperty<Root, Bool> { get }
```

## Discussion

Discussion Use the load(_:isolation:) method to retrieve the property value.

## See Also

### Loading track information

- [formatDescriptions](avfoundation/avpartialasyncproperty/formatdescriptions.md)
- [isPlayable](avfoundation/avpartialasyncproperty/isplayable-6txa5.md)
- [isDecodable](avfoundation/avpartialasyncproperty/isdecodable.md)
- [isEnabled](avfoundation/avpartialasyncproperty/isenabled.md)
- [totalSampleDataLength](avfoundation/avpartialasyncproperty/totalsampledatalength.md)
- [mediaCharacteristics](avfoundation/avpartialasyncproperty/mediacharacteristics.md)