Behind Video Calls: WebRTC, SFU, and MCU Explained with Real-World System Design
Jan 6 · 3 min read · Why Video Conferencing Is a Hard Problem Explain: Real-time audio/video Low latency (<200ms) Packet loss, NAT, firewalls Scaling from 2 → 10,000 users Key insight: Video calls are not just “streaming” — they’re distributed real-time systems. ...
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