How is the audio or video call and screen transmission encrypted?

When you start an audio or video call or screen transmission, the devices on both sides generate a random key that they exchange in encrypted form. A direct connection is then established between the devices (P2P), so that the data can be transferred directly, without having to go through a server. The same applies to the ‘split screen’ function.

For more information on end-to-end encryption in the WebRTC standard, click here and here.