README.md

UIX Video Call Example Project

This is a example project demonstrating how to create a basic video call application with UIX. Encrypted end-to-end video calls are established via DATEX and transmitted over a WebRTC connection.

Project structure

This project consists of a single TypeScript module (frontend/entrypoint.tsx) containing the UI and video call logic. Additionally, CSS styles are defined in frontend/entrypoint.css.

Streaming video and audio

Establishing a video call happens in four steps:

First, a video stream for the current device is requested using the navigator media API:

const ownMediaStream = await navigator.mediaDevices.getUserMedia({
  video: true,
  audio: true,
}).catch(console.error);

When the "Call" button is clicked, this media stream is sent to another endpoint by calling CallManager.call on the remote endpoint:

await CallManager.call.to(remoteEndpoint.val)(ownMediaStream);

On the remote endpoint, inside the CallManager.call function, the passed media stream is displayed in the remote video view:

remoteVideo.srcObject = mediaStream;

The remote endpoint also returns its own media stream from the CallManager.call function, which is then again displayed in the local endpoint's remote video view:

remoteVideo.srcObject = await CallManager.call.to(remoteEndpoint.val)(
  ownMediaStream,
);

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