⬢github JavaScript · 363 ★ +2 since we first saw it · pushed 2 d ago · MIT
vincentsch/explainroo
Explainer videos and product demos made by your AI agent. Free and open source: a local voice (Kokoro), word timing (Whisper) and a canvas renderer turn a script into a narrated MP4.
Explainroo is a free, open-source JavaScript framework that lets your AI coding agent produce narrated explainer videos locally. The agent writes a script and scene drawings; Kokoro generates the voice, Whisper times each word, a canvas renderer draws frames (with charts, icons, screenshots), and ffmpeg assembles a final MP4—no cloud services or API keys needed.
Why now: It was recently launched as a Show HN post, showcasing AI coding agents like Claude Code autonomously creating complete explainer videos.
Who it is for: Developers and indie makers who use AI coding agents and want to automate product demos or explainer videos without paid SaaS tools.
ai-agentsanimationcanvasclaude-codecodexexplainer-videoffmpegjavascriptkokoroproduct-demo
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