# explainroo

> AI-made explainer videos, offline — Free, open-source explainer videos made by your AI coding agent, with voice, timing and rendering all on your computer.

- Page: https://tesign.com/en/item/explainroo/
- JSON: https://tesign.com/en/item/explainroo/index.json
- Korean Markdown: https://tesign.com/item/explainroo/index.md
- Generated: 2026-10-02 03:18 UTC

## Numbers

- 19 stars — checked on GitHub 2026-09-30 15:44 UTC (+5 observed since the check)
- 7-day +7 observed via GH Archive (as of 2026-10-01 22:00 UTC)
- 24h +5 ★ · 30d +7 ★ (as of 2026-10-01 22:00 UTC)
- 4 Show HN points — observed 2026-10-01 11:08 UTC
- Star total = the value last checked on GitHub (stars_checked_at) + increases observed via GH Archive since. The 24h · 7d · 30d gains are GH Archive hourly events summed to the reference time (as_of). No score of ours.

## AT A GLANCE

- LICENSE: MIT (permissive) — https://spdx.org/licenses/MIT.html
- USAGE: Use, change and redistribute, commercially too. Keep the notice.
- OPEN SOURCE: YES
- LANGUAGE: JavaScript
- PLATFORM: cli
- CATEGORY: MEDIA
- Tags: 영상 · ai 에이전트 · 오픈소스
- SOURCES: Show HN https://github.com/vincentsch/explainroo · GitHub https://github.com/vincentsch/explainroo
- CREATE: https://explainroo.com/

## ACTIVITY

- Last commit: 2026-09-30 12:50 UTC
- Latest release: [unconfirmed]
- Contributors: [unconfirmed]
- Open issues (incl. PRs): [unconfirmed]
- Made by: [unconfirmed]
- Checked on GitHub: 2026-09-30 15:44 UTC

## Signals and evidence

- NEW · 1h OLD WHEN SEEN
- CROSS-SIGNAL · Show HN + GitHub

## TESIGN TAKE

You can start by giving your agent the repository address and a topic.

## WHY IT MATTERS

Recording a voice, editing and wrangling video tools just for a short explainer is a lot. With explainroo you tell your agent the topic, it writes the script and drawings, and you get an MP4.

## BUILD FROM THIS

- The agent writes two files, script.md and scenes.js; the open Kokoro voice model reads the script, Whisper times each word, and the drawings appear on cue. No account or API key. Example looks include paper, chalk and blueprint.

## WHO IT'S FOR

- Anyone who wants explainer videos without a studio, especially coding-agent users.

## START IN 5 MINUTES

```
# Paste the prompt from the README into your agent with your topic; it clones the repository and follows AGENTS.md.
```

## CAVEATS

- Needs a coding agent, and the README says it works best with Claude Code and Opus 5.5 for now. Recently released, with about 300 stars.

## RECEIPT

- FIRST SEEN BY TESIGN: 2026-09-30 14:44 UTC
- AT SOURCE: 2026-09-30 13:13 UTC
- KEPT: 2026-10-02 03:18 UTC
- Published on TESIGN: 2026-10-02 03:18 UTC
- Text last updated: 2026-10-02 03:18 UTC

## How to read this

- This file was produced by the same build, from the same data, as the tesign.com item page. The text is editorial; the numbers are stored observations.
- null in the JSON means not observed — never zero. The Markdown writes [unconfirmed] for it.
- Star total = the value last checked on GitHub (stars_checked_at) + increases observed via GH Archive since. The 24h · 7d · 30d gains are GH Archive hourly events summed to the reference time (as_of). No score of ours.
- A summary, not legal advice.

[Image] https://tesign.com/img/explainroo-99df211dc0.webp