01
It starts by itself
track and footage ready. Runs in Claude Code routine.
- ↻ track and footage ready
new edit brief with BPM and fps
iart-ai · 3K installsBeat-Sync Editing skill
Runs by itself, track and footage ready.
Every cut lands on beat.
Install the Beat-Sync Editing skill and make it a habit: follow https://gethabit.dev/skills/iart-ai/beat-sync-editing.md
- 1Copy
- 2Paste into Claude Code, Codex or Cursor
- 3It runs by itself
3K installs151 starsMIT licenceSource on GitHub ↗
Beat-Sync Editing
by iart-ai · 3K installs
The skill
The beat-sync editing skill turns music and story structure into frame-accurate cut points, transitions and speed ramps, for editors and motion designers working in an NLE, Remotion or After Effects.
Only when you ask.
The habit
Every cut lands on beat.
↻ Runs by itselftrack and footage ready
How the habit works.
You don't have to.
When does it start? How does it check its work? What does it remember?
One run, step by step.
Then it stops.
Stops after one edit plan per run and at most two sync retries.
- 01
Find the grid
Your agent captures BPM, fps and the beat-1 offset and computes frames per beat.
- 02
Pick the personality
It maps the chosen motion personality to phrase length and transition family.
- 03
Shape the arc
It sets frame ranges for each phase and shortens shots toward the climax.
- 04
List the cuts
It places cuts on 2, 4 or 8 beat phrases and the biggest visual on the drop.
- 05
Add transitions
It defaults to hard cuts and gives J and L cuts audio offsets in frames.
- 06
Plan retimes
It writes speed ramps as eased time-remap keyframes landing on the beat.
- 07
Verify sync
It checks frame/fps against detected beat seconds.
What it may do.
Nothing more.
It writes only in its own folder and asks you before anything goes out.
- Writes only inloops/beat-sync-edit-loop/**
- Talks tono outside service
- Sendsnothing
- Your OKNothing goes out, so it needs no OK.
Is it for you?
Use it when it fits.
Read both lists. If the left one sounds like you, the Beat-Sync Editing skill helps.
Use it when
- ✓ cutting footage to a music track
- ✓ fixing pacing that drags
- ✓ planning speed ramps and match cuts
Skip it when
- – single static frames
- – choosing easing curves only
Beat-Sync Editing skill, answered.
Can the plan go into code?
Yes. Cuts map to from and durationInFrames in Remotion, or layer in and out in After Effects.
Why not cut on every beat?
The skill says it feels frantic; it cuts on phrases instead.
How do I install the Beat-Sync Editing skill?
Copy the prompt at the top into your agent. It installs the skill from iart-ai/motion-design-skills and sets up the habit. Or run npx skills add iart-ai/motion-design-skills --skill beat-sync-editing.
Is the Beat-Sync Editing skill free?
Yes. It is published under MIT. Habit is free too.
Beat-Sync Editing. Now as a habit.
Install the Beat-Sync Editing skill and make it a habit: follow https://gethabit.dev/skills/iart-ai/beat-sync-editing.md
All iart-ai skills →More content skills →
Works in
- Claude Code
- Codex
- Cursor
- ChatGPT
- Claude app
Made by iart-ai, published under MIT. Habit links to the original and never changes it. Is this your skill?