Design Video Streaming Platform (YouTube/Netflix) - Frontend System Design Interview Guide

Hard

Design a production-ready video streaming platform like YouTube or Netflix with adaptive bitrate streaming, seek preview, quality selection, and offline support.

Backend as Black Box: Assume you have APIs for video metadata and streaming endpoints. Focus on the frontend architecture.

Key Challenges

This problem explores video streaming complexities:

  • Adaptive Bitrate Streaming: Adjust quality based on bandwidth
  • Seek Preview: Thumbnail preview when hovering timeline
  • Buffering Strategy: Pre-buffer for smooth playback
  • Quality of Experience: Minimize startup time and rebuffering
  • Offline Download: Cache videos for offline viewing
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