> ## Documentation Index
> Fetch the complete documentation index at: https://docs.1up.vision/llms.txt
> Use this file to discover all available pages before exploring further.

# Guest Cameras in Overlays

> Add guest cameras and multi-person calls to your Twitch stream. Low-latency video for OBS overlays.

## Calls in Overlays

Vision Calls lets you bring guests onto your stream with low-latency video. Add camera feeds directly to your overlay, control audio routing, and manage multiple participants.

For detailed information about the Calls feature, see the [Calls documentation](/calls/index).

***

## Adding Calls to Overlays

<Steps>
  <Step title="Create callers">
    Go to your overlay and click **Calls** in the bottom toolbar to create callers
  </Step>

  <Step title="Add camera layers">
    Click **+** and add a **Camera** layer for each caller
  </Step>

  <Step title="Assign callers">
    In the layer settings, select which caller appears in each camera layer
  </Step>

  <Step title="Position cameras">
    Drag and resize camera layers on your overlay
  </Step>

  <Step title="Share join links">
    Copy the call URL for each caller and share with your guests
  </Step>
</Steps>

***

## Camera Layer Settings

### Basic Settings

| Setting      | Description                                |
| ------------ | ------------------------------------------ |
| **Caller**   | Which caller's video to display            |
| **Fit mode** | How video fills the frame (cover, contain) |
| **Mirror**   | Flip the video horizontally                |

### Visual Settings

* Position and size
* Border radius (rounded corners)
* Opacity
* In/out animations

***

## Audio Management

### Audio Mixer

Control audio for each caller:

1. Open the **Audio Mixer** from the calls panel
2. Adjust individual caller volumes
3. Mute/unmute specific callers
4. Enable monitoring to hear callers in your headphones

### N-1 Audio

N-1 mix prevents callers from hearing themselves:

1. Enable N-1 in the Audio Mixer
2. Each caller hears everyone except themselves
3. Prevents echo and feedback

***

## Security

### Binding to Twitch

Prevent unauthorized access to call links:

1. When creating a caller, toggle **Bind to Twitch**
2. Select the Twitch account
3. Only that account can join the call

***

## Tips

<Tip>
  **Test calls before going live** - Have guests join early to check audio levels and video quality.
</Tip>

<Tip>
  **Use N-1 audio** for multi-person calls to prevent echo issues.
</Tip>

<Tip>
  **Position cameras consistently** - Create a visual layout that works for 1, 2, or more guests.
</Tip>

***

## Related

* [Full Calls Documentation](/calls/index) - Complete guide to Vision Calls
* [Audio Mixer](/calls/index#audio-mixer) - Detailed audio control