khan-explainer is a free, open-source (MIT) Claude Code skill. You describe the video, Claude writes a scene file, and one command renders an MP4 where a pen draws on a blackboard or whiteboard while a voice explains it.
Here's what it makes, how to install it, what to ask Claude for, and the catches.
What it makes
- Blackboard lesson: a diagram drawn stroke by stroke while the voice explains it.
- Draw-over-UI tutorial: arrows, circles and numbered steps drawn over your own product screenshots.
- Real-audio clip: a YouTube video or podcast in, vertical shorts out, with the board drawn to the speaker's words.
- The voice drives the clock, so the pen never runs ahead of the words.
- Chalk on a blackboard or marker on a whiteboard, landscape or vertical.
Keep reading
Free, for an email.
Unlocks 4 more sections, 1 copy-paste prompt, the document version, and every other guide on the site, for free. Enter your email once to keep reading.
45,000+ follow where these guides come from.No spam. Unsubscribe in one click.