{
 "schema_version": 1,
 "generated": "2026-10-20",
 "id": "academa-labs-manimgx--narrated-explainer-video-with-voice-sync",
 "repo": "academa-labs/manimgx",
 "repo_url": "https://github.com/academa-labs/manimgx",
 "repo_slug": "academa-labs-manimgx",
 "title": "Make a narrated explainer video synced to speech",
 "page_title": "How to make a narrated explainer video synced to speech with Manimgx",
 "summary": "Match 3D and math animations to spoken narration using self.say() in a Python scene.",
 "who": "An educator or course creator who records lessons and wants the animations to follow the spoken words.",
 "problem": "Lining up narration with each animation step by hand is slow and error prone.",
 "outcome": "An MP4 where the animations are timed to the spoken lines written with self.say().",
 "steps": [
  "Run `pip install manimgx`",
  "Read the sound and voice guide at https://manimgx.academa.ai/user-guide/sound-and-voice/.",
  "Write a construct method that calls self.say() with the narration and self.play() with each animation.",
  "Run `manimgx render scene.py`",
  "Watch the MP4 and check that each animation lines up with its spoken words."
 ],
 "agent_prompt": "Using the manimgx repo at github.com/academa-labs/manimgx, write a scene.py for <target lesson> that uses self.say() to sync narration with self.play() animations, then run manimgx render scene.py. Expected output: an MP4 with speech-synced animations. Verify that each animation starts at the matching spoken line.",
 "agents": [
  "any"
 ],
 "difficulty": "Intermediate",
 "time": "45 minutes",
 "basis": "readme",
 "caveat": "The README names self.say() and a sound and voice guide but does not show the narration input format, so read that guide before writing the scene.",
 "category": "Content",
 "tags": [
  "Content"
 ],
 "lang": "python",
 "requirements": [
  "Python 3.13 or newer for the pip install route",
  "Node.js and npm for the browser route (npm install manimgx)",
  "A browser with WebGPU support to view scenes in the web page",
  "An AI coding agent such as Claude Code, Codex or Cursor, only for the prompt-driven route"
 ],
 "risk": "none",
 "seen_in_the_wild": false,
 "mentioned_publicly": false,
 "risks": [],
 "best": false,
 "score": 0.8,
 "evidence": [],
 "url": "https://dedupedai.com/use-cases/academa-labs-manimgx/narrated-explainer-video-with-voice-sync/",
 "md": "https://dedupedai.com/use-cases/academa-labs-manimgx/narrated-explainer-video-with-voice-sync/index.md",
 "disclaimer": "Deduped lists open-source repositories that belong to other people. We do not own, maintain, audit, or vouch for any of them, and a repo appearing here is not an endorsement or a safety check. The use cases, steps, and prompts are written by AI and may be incomplete, outdated, or just wrong. Where a use case is marked \"Seen in the wild\", we link to public posts where someone described something similar, but we have not verified those posts and the use case itself is still our AI's own write-up. Use all of this at your own risk. Only run code, commands, or agents on systems and accounts you are authorized to use, and read the code and every command before you run it, especially anything that touches credentials, files, or the network. Nothing here is professional, security, legal, or financial advice. All trademarks and project names belong to their respective owners, and their use here does not imply affiliation. Content is provided as is, without warranties of any kind. Found a mistake, a safety problem, or something you want removed? Email hello@dedupedai.com and we will look at it promptly.",
 "api": "https://dedupedai.com/api/v1/usecases/academa-labs-manimgx--narrated-explainer-video-with-voice-sync.json",
 "api_version": "v1"
}