TL;DR — Live Streaming Platform

Design a live streaming platform similar to Twitch or YouTube Live. Streamers broadcast video to thousands or millions of concurrent viewers with sub-5-second glass-to-glass latency. The system must handle video ingest via RTMP, real-time transcoding into multiple quality levels, adaptive bitrate delivery via HLS/DASH through a global CDN, and a synchronized live chat running alongside each stream. Key features: Streamers broadcast via RTMP from OBS or mobile apps. Real-time transcoding into 4 quality levels (1080p, 720p, 480p, 360p).