Content fingerprinting and matching
Design a content-matching / copyright-ID system (Content-ID style) that fingerprints every uploaded video and audio track and matches it against a reference catalog of tens of millions of copyrighted works. Every new upload (hundreds of hours per minute) must be checked, partial and modified matches (pitch-shifted audio, cropped/recompressed video, a 10s clip inside a 30m vlog) must be caught, and a match must trigger a claim. Design the fingerprinting, the index, and the matching pipeline.
What a strong answer looks like
Clarify scale and constraints first. Propose a clean component breakdown, then go deep on the hard parts (data model, bottlenecks, consistency, failure modes) and name the trade-offs you are making.
Clarify5:30 left
Estimate5:30 planned
Design16:30 planned
Deep dive13:30 planned
Failure9:00 planned
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.
Run or narrate your approach, then ask the coach.