33. Design a Video Streaming Platform

Episode 33 of 34 | System Design: From Fundamentals to Interview Mastery An original video-on-demand interview lesson covering resumable upload, isolated processing, adaptive bitrate packaging, atomic publication, metadata authorization, CDN delivery and playback observability. Live broadcasting is explicitly excluded and discussed as a separate extension. Estimates and objectives are illustrative scenario assumptions. Original script, worked examples, diagrams and animation. Adapted educational presentation; no endorsement implied. Voice generated locally with the speaker's authorization. Chapters 0:00 Welcome and what we will cover 0:11 Choose video on demand before drawing infrastructure 1:46 Estimate concurrent bandwidth and processing work 3:19 Make upload resumable and completion verifiable 4:51 Process renditions as a versioned dependency graph 6:25 Publish one complete immutable playback version 8:05 Trace adaptive playback and origin protection 9:47 Count views and resume playback without blocking video 11:27 Make degradation and content protection explicit 13:05 Walk the complete video-on-demand HLD 14:42 Defend publication, seek and live-streaming boundaries 16:18 Recap, practice and thank you