This tutorial explains WebRTC in just 100 seconds and shows you how to build a real-time peer-to-peer video chat app from scratch using vanilla JavaScript and Firebase. WebRTC (Web Real-Time Communication) enables browsers to exchange audio, video, and data streams directly without needing third-party servers or native apps. The video covers the full architecture — from session description protocols (SDP) and signaling via Firebase, to ICE candidates and STUN/TURN server setup for real-world connectivity. Viewers learn how to create, answer, and connect video calls, manage ICE negotiation, and stream local and remote webcam feeds using the RTC peer connection API. It also explains key networking concepts like NAT traversal and interactive connectivity establishment, ensuring a deep understanding of how WebRTC works behind the scenes. This guide is ideal for developers building secure, low-latency video communication apps for the remote-work era.
