k0nserv/pion-webrtc

Pion WebRTC lets you build applications that stream real-time audio and video, or send data directly between devices, using the Go programming language. WebRTC is the same technology that powers video calls in your browser, but Pion brings it to the server side, opening up use cases beyond just browser-to-browser chat. At a high level, it implements the full WebRTC standard, meaning it handles all the networking, security, and media format details for you. It can send and receive audio and video, stream files in formats like IVF or Ogg, and even do advanced things like simulcast (sending multiple quality levels of the same video). It also supports DataChannels, which let two devices send arbitrary data to each other securely without needing an intermediary server. On the connectivity side, it handles all the tricky negotiation to punch through firewalls and routers so devices can find each other. Someone building a remote-controlled robot with a live camera feed would use this. So would a founder creating a video conferencing product who wants to process audio or video on the server, or a developer who needs to stream a video file to many browsers simultaneously with perfect sync. It is also useful for securely sending data between two servers without relying on a third-party messaging service. What stands out is that it is written in pure Go with no external C dependencies, which means it runs on a remarkably wide range of platforms, Windows, macOS, Linux, iOS, Android, and even WebAssembly. It builds fast and avoids the complexity that typically comes with traditional WebRTC implementations, which often require heavy native libraries. The project also links to a free companion book called "WebRTC for the Curious" for anyone wanting to understand the underlying technology in depth.