{
 "schema_version": 1,
 "generated": "2026-10-20",
 "id": "bestagentkits-motion-video-skill--verify-sync-and-mix-of-motion-video",
 "repo": "bestagentkits/motion-video-skill",
 "repo_url": "https://github.com/bestagentkits/motion-video-skill",
 "repo_slug": "bestagentkits-motion-video-skill",
 "title": "Check beat sync and mix balance of a motion video",
 "page_title": "How to check beat sync and mix balance of a motion video with Motion Video Skill",
 "summary": "Run the bundled Python checks on a project to find splice drift and a music-to-speech imbalance.",
 "who": "A video editor or developer who has a motion video project and needs proof the music and speech levels are right before publishing.",
 "problem": "Music that drifts off the beat or sits too loud under speech is easy to miss when watching a render.",
 "outcome": "Reports showing splice lag per segment, music level under speech versus the gaps, and the beat grid used.",
 "steps": [
  "Install the skill with `npx skills add bestagentkits/motion-video-skill`.",
  "Install the Python requirements, numpy and scipy, and confirm ffmpeg and ffprobe are on PATH.",
  "Run `python skills/motion-video/scripts/verify-arrangement.py` on the project and read the per-segment splice lag; it exits 1 on drift. (inferred, check the README)",
  "Run `python skills/motion-video/scripts/measure-mix-balance.py` on the project and check music sits about 4 to 6 dB under speech. (inferred, check the README)",
  "Run `python -m unittest discover -s skills/motion-video/scripts/tests` to confirm the checker itself passes."
 ],
 "agent_prompt": "Using the motion-video skill from bestagentkits/motion-video-skill, run verify-arrangement.py and measure-mix-balance.py on the project at <project-path> and report each music segment's splice lag and the music-to-speech level difference. Expected output is a short pass or fail report. Verify that every segment is within ±2 ms of its target beat and that music is about 4 to 6 dB under speech.",
 "agents": [
  "any"
 ],
 "difficulty": "Advanced",
 "time": "60 minutes",
 "basis": "readme",
 "caveat": "The README does not document the command-line arguments for the Python scripts, so check each script's usage before running it on a real project.",
 "category": "Content",
 "tags": [
  "Content"
 ],
 "lang": "javascript",
 "requirements": [
  "Node.js 20+",
  "Python 3.10+ with numpy and scipy",
  "ffmpeg and ffprobe on PATH",
  "The multix CLI, authenticated with a Gemini key and an ElevenLabs key",
  "npx --yes hyperframes@0.7.99 (no install step needed)"
 ],
 "risk": "none",
 "seen_in_the_wild": false,
 "mentioned_publicly": false,
 "risks": [],
 "best": false,
 "score": 0.7,
 "evidence": [],
 "url": "https://dedupedai.com/use-cases/bestagentkits-motion-video-skill/verify-sync-and-mix-of-motion-video/",
 "md": "https://dedupedai.com/use-cases/bestagentkits-motion-video-skill/verify-sync-and-mix-of-motion-video/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/bestagentkits-motion-video-skill--verify-sync-and-mix-of-motion-video.json",
 "api_version": "v1"
}