> For the complete documentation index, see [llms.txt](https://docs.mixeffect.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mixeffect.app/automate/osc/messages/downstream-keyers/dsk-inputs.md).

# DSK Inputs

<table><thead><tr><th width="291.3333333333333">Message</th><th>Description</th><th>Arguments</th></tr></thead><tbody><tr><td><code>/mixeffect/dsk/inputs</code></td><td>Sets the fill and key sources for the downstream keyer.</td><td>Multiple</td></tr></tbody></table>

| Argument       | Type    | Description                                                                    |
| -------------- | ------- | ------------------------------------------------------------------------------ |
| Fill Source ID | Integer | Integer that is the fill video source ID.                                      |
| Key Source ID  | Integer | Integer that is the key video source ID.                                       |
| DSK Index      | Integer | <p>(Optional)</p><p>One-based index of the downstream keyer. Default is 1.</p> |