> ## 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.

# Multi-Camera Streaming

> Add guest cameras to your Twitch stream with low latency. High-quality multi-cam for OBS overlays.

<video autoPlay muted loop playsInline src="https://1up.vision/demo-call.webm" className="w-full rounded-lg" />

## How to Use Calls

Vision Calls is a powerful solution to use multiple camera signals in one overlay. It combines low latency with high quality and is easy to setup.

### Getting Started

<Steps>
  <Step title="Create overlay">
    Create a new overlay or open an existing one
  </Step>

  <Step title="Create caller">
    In the bottom toolbar click on the Call button, then create a new caller and give it a name. Optionally you can bind it to a Twitch account so nobody else can use it when the link gets leaked.
  </Step>

  <Step title="Copy URL">
    After creating, copy the call URL which is used to join the call
  </Step>

  <Step title="Add to overlay">
    Click on "Add to Overlay" or create a new Camera layer and select the newly created caller
  </Step>

  <Step title="Position">
    Move and resize the camera to your liking
  </Step>

  <Step title="Save & join">
    Save your overlay and join the call via the URL
  </Step>
</Steps>

### Audio-Mixer

Vision Calls can also be used to talk to each other. The caller's sounds can be played back via the call page or via the overlay. In the Audio-Mixer you can adjust this behavior.

The Audio-Mixer allows you to:

* Adjust each caller's volume
* Monitor their sounds or talk back to individual callers
* Enable N-1 mix so the overlay doesn't play back the caller's sounds