# Aux/Output Source

<table><thead><tr><th width="286.61458846722525">Message</th><th>Description</th><th>Arguments</th></tr></thead><tbody><tr><td><code>/mixeffect/aux/source</code></td><td>Sets the source for an auxiliary output.</td><td>Multiple</td></tr></tbody></table>

| Argument        | Type    | Description                                                                            |
| --------------- | ------- | -------------------------------------------------------------------------------------- |
| Video Source ID | Integer | The video source ID.                                                                   |
| Aux             | Integer | <p>(Optional)</p><p>One-based index that is the Auxiliary output ID. Default is 1.</p> |

Note that Aux sources can have other values than just the video sources, including SuperSource, Program, Preview, Multiview, and Camera 1 direct (only for Aux1) and Camera 2 direct (only for Aux2). Some of these values are dependent on the switcher.

```
public enum Base: UInt16 {
		case black = 0
		case input = 1
		case colorBars = 1000
		case color = 2001-2002
		case mediaPlayer = 3010-3040
		case mediaPlayerKey = 3011-3041
		case keyMask = 4010-4040
		case downStreamKeyMask = 5010-5040
		case superSource = 6000-6001
		case cleanFeed = 7001-700x
		case auxiliary = 8001-80xx
		case multiview = 9001-9004
		case program = 10_010-10_040
		case preview = 10_011-10_041
		case inputDirect = 11_001-11_0xx
}
```