# \&chromakey

Sender-Side Option! ([`&push`](https://docs.vdo.ninja/advanced-settings/setup-parameters/push))

## Options

Example: `&chromakey=30`

| Value            | Description                                    |
| ---------------- | ---------------------------------------------- |
| (no value given) | Enables chroma key with default threshold (25) |
| (integer value)  | Sets the green detection threshold (1-50)      |

## Details

`&chromakey` is a shortcut for [`&effects=14`](https://docs.vdo.ninja/advanced-settings/video-parameters/effects). It removes green-colored areas from the video using HSL-based chroma key detection.

The threshold value controls sensitivity: lower values remove more green (more aggressive), higher values retain more green. The default is 25.

If the user manually adjusts the threshold via the slider during a session, that value is remembered per room and streamID and restored on the next visit.

## Related

{% content-ref url="and-chromakeybg" %}
[and-chromakeybg](https://docs.vdo.ninja/advanced-settings/video-parameters/effects/and-chromakeybg)
{% endcontent-ref %}

{% content-ref url="" %}
[](https://docs.vdo.ninja/advanced-settings/video-parameters/effects)
{% endcontent-ref %}