Explainroo

Explainroo is an open-source tool for making narrated videos with an AI coding agent. Give the agent a topic or describe an app you want to demonstrate, then ask it to run Explainroo’s documentation command. The agent can prepare the script and scenes, while Explainroo produces the finished MP4 on your computer. The local workflow handles narration, word timing and rendering without an account or API key. It works with coding agents including Claude Code, Codex and Pi. Optional external services can be used with your own credentials. Videos can combine drawn scenes with screenshots, photos or screen recordings. For product demos, an agent can use an app’s code or website to help show a workflow. You can also adjust the script and scene files yourself, choose a voice or supply a recording, and configure captions, visual style and sound. The documentation covers video checks and publishing options as well. Explainroo is useful for people who already work with coding agents and want to create explainers, software walkthroughs or product demos without assembling every scene by hand.