---
title: extendedLanguageTag
framework: avfoundation
role: symbol
role_heading: Type Property
path: avfoundation/avpartialasyncproperty/extendedlanguagetag
---

# extendedLanguageTag

The language tag of the track.

## Declaration

```swift
static var extendedLanguageTag: AVAsyncProperty<Root, String?> { get }
```

## Discussion

Discussion Use the load(_:isolation:) method to retrieve the property value. The value is a BCP-47 language tag, or nil if the track doesn’t specify a language tag.

## See Also

### Loading language support

- [languageCode](avfoundation/avpartialasyncproperty/languagecode.md)