{
 "schema_version": 1,
 "generated": "2026-10-24",
 "id": "cuongyd196-auto-compare-video--narrated-video-with-free-edge-tts",
 "repo": "Cuongyd196/auto-compare-video",
 "repo_url": "https://github.com/Cuongyd196/auto-compare-video",
 "repo_slug": "cuongyd196-auto-compare-video",
 "title": "Render a narrated comparison video with free Edge TTS",
 "page_title": "How to render a narrated comparison video with free Edge TTS with Auto Compare Video",
 "summary": "Generate voiceover with Edge TTS, which needs no API key, and render an existing comparison video to MP4.",
 "who": "A creator with no paid voice service who wants a narrated Vietnamese comparison short from the terminal.",
 "problem": "Narration usually needs a paid voice account, and the video timing has to match each spoken line.",
 "outcome": "A rendered MP4 in the renders folder of the dev-vs-devops project, with voiceover timed from measured audio length.",
 "steps": [
  "Run `cp .env.example .env` and set TTS_PROVIDER=edge in .env.",
  "Run `cd videos/dev-vs-devops`. (inferred, check the README)",
  "Run `node scripts/generate-vo.mjs` to create the voiceover files and durations.json.",
  "Run `npm run dev` to preview the video in the local preview server.",
  "Run `npm run render` to write the MP4 to renders/."
 ],
 "agent_prompt": "In the auto-compare-video repo, set TTS_PROVIDER=edge in .env and generate the voiceover for videos/dev-vs-devops, then render it. Expected output: an MP4 in videos/dev-vs-devops/renders/ and assets/vo/durations.json with measured clip lengths. Verify that the render command finishes without errors and that the MP4 plays.",
 "agents": [
  "any"
 ],
 "difficulty": "Intermediate",
 "time": "45 minutes",
 "basis": "readme",
 "caveat": "The README says Edge TTS is free and needs no API key, but it does not describe any usage limits, so check the service before generating a large batch of videos.",
 "category": "Content",
 "tags": [
  "Content"
 ],
 "lang": "html",
 "requirements": [
  "Node.js 18 or newer",
  "FFmpeg and FFprobe available in PATH",
  "One TTS provider: VieNeu TTS (needs CIT Voice Studio running locally), Edge TTS (no API key), or Vbee TTS (needs App ID and Access Token)",
  "Optional: an AI coding agent such as Claude Code, Cursor or Codex to run the create-video skill"
 ],
 "risk": "none",
 "seen_in_the_wild": false,
 "mentioned_publicly": false,
 "risks": [],
 "best": false,
 "score": 0.8,
 "evidence": [],
 "url": "https://dedupedai.com/use-cases/cuongyd196-auto-compare-video/narrated-video-with-free-edge-tts/",
 "md": "https://dedupedai.com/use-cases/cuongyd196-auto-compare-video/narrated-video-with-free-edge-tts/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/cuongyd196-auto-compare-video--narrated-video-with-free-edge-tts.json",
 "api_version": "v1"
}