---
title: source
framework: coremediaio
role: symbol
role_heading: Instance Property
path: coremediaio/cmioextensionstream/source
---

# source

The source object for the stream.

## Declaration

```swift
weak var source: (any CMIOExtensionStreamSource)? { get }
```

## See Also

### Inspecting a Stream

- [direction](coremediaio/cmioextensionstream/direction-swift.property.md)
- [CMIOExtensionStream.Direction](coremediaio/cmioextensionstream/direction-swift.enum.md)
- [clockType](coremediaio/cmioextensionstream/clocktype-swift.property.md)
- [CMIOExtensionStream.ClockType](coremediaio/cmioextensionstream/clocktype-swift.enum.md)
- [customClockConfiguration](coremediaio/cmioextensionstream/customclockconfiguration.md)
- [CMIOExtensionStreamCustomClockConfiguration](coremediaio/cmioextensionstreamcustomclockconfiguration.md)