# Show HN: VidDojo – Turn any YouTube video into an interactive course

> Source: <https://viddojo.com>
> Published: 2026-07-21 12:06:24+00:00

# Don't rewatch.

Train.

AI turns any educational video into a course: questions inside the player, wrong answers rewind to the exact spot.

Checkpoint. What does this print?

`log("1"); setTimeout(() => log("2")); log("3");`

## Not a player. A trainer.

### The video asks the questions

Chapters get cut automatically. The player pauses itself at checkpoints. You never decide when to test yourself.

### Six ways to ask

The player never repeats itself twice in a row.

### Rewind to the eureka moment

AI finds the exact 30-second segment instead of saying «watch it again».

### Chapters unlock like a map

Weak answers hide what's next, strong ones unlock an insider take.

### Per-concept progress

Not «53% of the course»: useEffect 30%, useMemo 80%.

### A boss-fight at the end

Coding videos end in a browser editor with Jest tests: no pass without green. Everything else gets a final exam graded by AI.

`8 tests passed`

## Three steps from link to course

- 1
### Paste a link

YouTube, Vimeo, direct .mp4. Captions or not: Whisper picks up videos up to 140 min.

- 2
### AI builds the course in 60s

Chapters, varied checkpoints, secret branches, a final boss-fight.

- 3
### Learn and see your gaps

Player pauses on questions. Wrong answers rewind. A health bar shows where you're weak.

## Ready to learn the way they should've taught from day one?

Paste a link, get a course, start training for free. Upgrade when you outgrow 30-minute videos.