VidDojo: turn YouTube videos into interactive courses
Skip to content
Don't rewatch.<br>Train.<br>AI turns any educational video into a course: questions inside the player, wrong answers rewind to the exact spot.<br>Start training freeSee pricing
Interactive demo. The answers are clickable.03:41<br>What the heck is the event loop anyway?Chapter 1 of 4
Checkpoint. What does this print?<br>log("1"); setTimeout(() => log("2")); log("3");1 2 31 3 2
1 · Call stack2 · Event loop, lockedBoss fight
Not a player. A trainer.
The video asks the questions<br>Chapters get cut automatically. The player pauses itself at checkpoints. You never decide when to test yourself.
Six ways to ask<br>The player never repeats itself twice in a row.<br>QuizFlashcardsRetellDrawingDiagramPredict next part
Rewind to the eureka moment<br>AI finds the exact 30-second segment instead of saying «watch it again».
Ch 1Ch 2Ch 3Boss<br>Chapters unlock like a map<br>Weak answers hide what's next, strong ones unlock an insider take.
useEffect<br>useMemo
Per-concept progress<br>Not «53% of the course»: useEffect 30%, useMemo 80%.
A boss-fight at the end<br>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
11Paste a link<br>YouTube, Vimeo, direct .mp4. Captions or not: Whisper picks up videos up to 140 min.
22AI builds the course in 60s<br>Chapters, varied checkpoints, secret branches, a final boss-fight.
33Learn and see your gaps<br>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?<br>Paste a link, get a course, start training for free. Upgrade when you outgrow 30-minute videos.<br>Start training freeSee pricing
Ready-made courses, in 5 seconds<br>No signup, no URL to paste. Click any card and jump straight into the player with checkpoints.
View all 27 courses<br>20:34<br>The best stats you've ever seen | Hans Rosling<br>TED·11 chapters
17:00<br>The essence of calculus<br>3Blue1Brown·10 chapters
11:00<br>The Agricultural Revolution: Crash Course World History #1<br>CrashCourse·7 chapters
12:57<br>The Biggest Myth In Education<br>Veritasium·9 chapters
11:47<br>The Science of Thinking<br>Veritasium·7 chapters
17:57<br>How Great Leaders Inspire Action | Simon Sinek | TED<br>TED·11 chapters
6:03<br>Grit: The Power of Passion and Perseverance | Angela Lee Duckworth | TED<br>TED·3 chapters
6:46<br>The Immune System Explained I – Bacteria Infection<br>Kurzgesagt – In a Nutshell·4 chapters