Claude Code can't ingest video out of the box — so in this build I give it eyes and ears. Paste any YouTube URL into a single /watch command and Claude hands back a full frame-by-frame breakdown of the hook: what's on screen, what's being said, why it works, and a reusable formula you can steal.
I run it live on a couple of viral hooks from creators you probably already follow, walk through the architecture (it's surprisingly simple — two tools you've definitely heard of), and show the one design choice that makes hook analysis actually useful instead of generic. There's also a fun moment where Claude catches a mistake YouTube's auto-captions made on the very first frame.