VK Calls: connecting thousands of people with Android and iOS using WebRTC

WebRTC is an industry standard for creating service of Internet calls. With its help VOIP connection is implemented just in a couple of lines, when two people take part in a call. But it's not that simple with group video calls, especially when you want to make calls without any restrictions for the number of participants. Here WebRTC turns out to be a source of issues and disappointment.

In this talk we will learn video, audio and architecture of WebRTC. Using VK calls as an example, the speakers will talk about optimizations of these components for thousands of participants from the point of view of Android and iOS clients.