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video_motion: Skill for Claude Code

.agents/skills/music-to-video/SKILL.md

music-to-video is a skill for Claude Code, Codex from maiscafe/video_motion. It costs 143 tokens per session (3,872 once invoked), scanned A, a copy of music-to-video, MIT.

A workflow that turns a music track into a beat-synced HyperFrames video, where the visuals change in time with the music.

In plain words
What is it for?
Use it to analyze a track, plan video frames, include supplied images or videos, and build a video without narration or website footage.
Why use it?
It removes the need to plan every visual change and timing decision by hand from the audio onward.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents; installed under .agents/ (shared by several agents).

This is maiscafe/video_motion's own configuration. It tells Claude Code and Codex how to work on video_motion itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything video_motion configures →

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is Contracts: ../hyperframes-core/references/sub-compositions.md + determinism-rules.md.

not rated 2repo 2mo ago A scan 143 tokens copy · 100% MIT
View source ↗ maiscafe/video_motion
Reuse

Borrowing it

Nothing to install: this file belongs to maiscafe/video_motion. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/maiscafe/video_motion/master/.agents/skills/music-to-video/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/maiscafe/video_motion

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for music-to-video

README.md
[![agentmods](https://agentmods.dev/badge/skills/maiscafe/video_motion/music-to-video/github.svg)](https://agentmods.dev/skills/maiscafe/video_motion/music-to-video)
Your own site
<a href="https://agentmods.dev/skills/maiscafe/video_motion/music-to-video"><img src="https://agentmods.dev/badge/skills/maiscafe/video_motion/music-to-video/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for music-to-video

Your own site · 80×15
<a href="https://agentmods.dev/skills/maiscafe/video_motion/music-to-video"><img src="https://agentmods.dev/badge/skills/maiscafe/video_motion/music-to-video.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 143 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,872 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00143 $0.03872
Opus 5 $0.00072 $0.01936
Sonnet 5 $0.00029 $0.00774
Haiku 4.5 $0.00014 $0.00387

Measured 11d ago against content hash 6187efb7b0f8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

music-to-video scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (references/motion-primitives/assets/gsap.min.js, scripts/analyze-beatgrid.py, scripts/assemble-index.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to music-to-video — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/music-to-video/SKILL.md · 198 lines

How it starts

The opening of the file, as written. The whole thing — 198 lines — stays where its author put it; the contents beside it link to each section on GitHub.

music-to-video — one music-grounded, beat-synced video workflow

Use this skill to turn a music track into a beat-synced HyperFrames video. You analyze the track once, lay out the frames, fill in a per-frame plan, and build each frame as a composition. The input is a music track plus optional user images or videos — there is no narration and no website capture. Typography and templates are the floor (a complete video needs zero assets); any media the user supplies is cut in on the same beat grid.

You are the orchestrator. Work in videos/<project>/. Run the steps in order and pass each Gate before moving on. Two steps need the user: Step 3 (plan approval) and Step 6 (render approval). Do every step yourself except Step 4, where you dispatch one sub-agent per frame. Keep design and motion rules out of this file — they live in references/ and the frame-worker sub-agent.

SKILL_DIR = this skill directory. PROJECT_DIR = videos/<project-name>/.

Workflow: Step 0 setup → hyperframes.json + assets/bgm.mp3; Step 1 analyze → audiomap.json; Step 2 skeleton → STORYBOARD.md (frames, groups TBD); Step 3 plan → complete STORYBOARD.md + frame.md; Step 4 build → compositions/frames/NN-*.html; Step 5 assemble → index.html; Step 6 render → renders/video.mp4.

Two ideas that shape everything

  • One analyzer, and you trust it. analyze-beatgrid.py is the only beat analyzer — never re-measure beats with another tool or by ear. Its energy / density / rolls / onsets / silences are always reliable. Its bpm and beats_sec are reliable only when the music is genuinely rhythmic; on calm music the grid is a metronome the tracker imposed, so pace by phrases and energy instead and never hard-cut to it. Deciding which case you're in is each frame's pacing (Step 2).
  • One frame = one file; groups live inside. Step 2 cuts the track into frames, and each frame becomes one composition file compositions/frames/NN-<frame_id>.html, built by one frame-worker. A frame can subdivide into groups (each a template or a motion-primitives combo). Extra density goes inside a group, so frame count tracks distinct treatments, not beats — a fast track does not blow up the number of sub-agents.

Read the full file on GitHub · 198 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 198 lines · 143 tokens per session scan A 6187efb7b0f8

Subscribe to this mod's changes

music-to-video is a skill published in the GitHub repository maiscafe/video_motion (2 stars, last pushed 2mo ago), licensed MIT. It adds 143 tokens to every session and 3,872 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to music-to-video, differing in 0 lines, and is treated as a copy.

Creative and media
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