This question evaluates system architecture and design competencies—specifically distributed media processing, adaptive-bitrate transcoding, scalability, fault tolerance, observability, and security—and is categorized under System Design.

You recently built a system that lets users upload short videos, processes them into adaptive-bitrate streams, performs safety/moderation, and serves them at scale via a CDN. Present a high-level architecture and explain how it meets product and operational requirements.
Be prepared for deep dives into specific components (e.g., upload resumability, transcoder autoscaling, or moderation latency).
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