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See it in action

Watch the full demo with narration and burned subtitles.

Install

npx --yes github:SpeedPainterOrg/explainer-video

The installer detects Codex and Claude Code automatically. Start a new agent
session after installing and complete Google sign-in if prompted.

Make a video

Create a 30-second explainer video about the history of the FIFA World Cup,
from the first tournament in 1930 to today.

You can provide text, a URL, or a document and choose the language, duration,
aspect ratio, voice, and subtitles. Sensible defaults are used when you
do not specify them.

Privacy

• Your agent reads the original file locally; the file itself is not uploaded.
• Only the extracted content needed to create the video is sent to the service.
• You never need to provide an image, voice, storage, or renderer API key.

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