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How to make a beat-synced launch video from a script with Motion Video Skill

An agent turns a release script into a 1920×1080 video with voice-over, captions and music.

  • Top pick
  • Content
  • Intermediate
  • 120 minutes
  • From the README
  • Claude Code
  • Codex
  • Cursor
  • Gemini CLI

Credentials. The workflow needs Gemini and ElevenLabs API keys, which must be kept in the multix CLI configuration and never pasted into project files.

Who it is forA product marketer or indie creator who needs a short launch video and has a script but no editing time.

The problemMotion-graphic videos need timed cuts, a voice-over, captions, sound effects and a balanced mix, which is slow to assemble by hand.

The outcomeA rendered 1920×1080 30 fps video whose scene cuts land on the music beats and whose reveals land on spoken words.

What you need first

  • 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 [email protected] (no install step needed)

Steps

  1. Install the skill with npx skills add bestagentkits/motion-video-skill.
  2. Set up the multix CLI with your Gemini and ElevenLabs keys in its own configuration.
  3. Ask your agent for the video, naming the length, the release and the style (comic multiverse or glass keynote).
  4. Review the generated script, voice-over and music plan the agent produces.
  5. Confirm the render passes the measurable checks: lint and check clean, 1920×1080 at 30 fps, and about -14 LUFS.

Prompt for your agent

Using the motion-video skill from bestagentkits/motion-video-skill, make a <length>-second launch video for <release name> in the comic multiverse style with voice-over, captions and music. Follow the production pipeline in order and deliver the rendered 1920×1080 30 fps video. Verify that hyperframes lint and check pass and that the loudness is around -14 LUFS with a true peak no higher than -1 dBFS.

Caveat. The README does not bundle any generated media, so the voice-over, music and SFX are produced fresh in your own provider accounts.

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