---
title: "addStream(_:)"
framework: coremediaio
role: symbol
role_heading: Instance Method
path: "coremediaio/cmioextensiondevice/addstream(_:)"
---

# addStream(_:)

Adds a stream to a device.

## Declaration

```swift
func addStream(_ stream: CMIOExtensionStream) throws
```

## Parameters

- `stream`: A stream to add to a device.

## See Also

### Managing Streams

- [streams](coremediaio/cmioextensiondevice/streams.md)
- [removeStream(_:)](coremediaio/cmioextensiondevice/removestream(_:).md)