---
title: "init(identifier:)"
framework: avfoundation
role: symbol
role_heading: Initializer
path: "avfoundation/avmutablecaptionregion/init(identifier:)"
---

# init(identifier:)

Creates a caption region that has an identifier.

## Declaration

```swift
init(identifier: String)
```

## Parameters

- `identifier`: The identifier of the caption region.

## See Also

### Creating a caption region

- [init()](avfoundation/avmutablecaptionregion/init().md)