The problem

I watch a lot of long coding tutorials on YouTube — 2, 3, sometimes

4 hours. React, Node, full-stack builds.

The problem: I always need to go back and find a specific part.

"Where did he set up the auth context?" or "When did she configure

the middleware?" Every time, it's 5 minutes of scrubbing through

the progress bar trying to find the right moment.

YouTube chapters help sometimes, but they're broad

("Part 3: Backend") — not specific enough when you need

the exact moment a concept is introduced.

What I built

A tool that extracts the key concepts from a tutorial video and

shows them next to the player with timestamps.

Click any concept → the video jumps to that exact moment.

Think of it as a clickable table of contents for any long

YouTube tutorial, but at the concept level — not just chapters.

Example: for a 3-hour React tutorial, you'd see terms like

useEffect , auth context , protected routes , JWT ,

middleware — each one clickable, each one jumping you

to where it's…