New: 98,000+ skills indexed from GitHub repos with 100+ stars · every skill safety-checkedBrowse top skillsTop skills
Esc to closeBrowse all skills
Submit a skillBrowse skills
Submit a skillBrowse skills

Agent skill

Beat Sync Montage

by 0xsline in 0xsline/OpenChatCut

Plan and build a finished beat-synced montage where cut placement serves the content, not just the metronome.

AGPL-3.0Auto-check passedMedia & Creative

Install Beat Sync Montage

skills CLI
$ npx skills add 0xsline/OpenChatCut --skill beat-sync-montage -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install 0xsline/OpenChatCut beat-sync-montage --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/0xsline/OpenChatCut.git skills-src && mkdir -p .claude/skills && cp -r skills-src/src/agent/skills/beat-sync-montage .claude/skills/beat-sync-montage && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
beat-sync-montage
GitHub stars
2.2k
Token cost
~1.2k tokens
SKILL.md length
672 words
Files
3 (incl. references)
Skills in repo
31
Repo updated
First seen
Licence
AGPL-3.0

At a glance

Plan and build a finished beat-synced montage where cut placement serves the content, not just the metronome.

  • Works in 10 steps: Confirm the track is on the timeline and… → Judge whether the material actually… → Choose the density arc before choosing… → …
  • Beat-sync montage
  • SKILL.md covers When to switch workflows, Workflow, Plan Format and Rules
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Beat Sync Montage is an agent skill from 0xsline/OpenChatCut. Plan and build a finished beat-synced montage where cut placement serves the content, not just the metronome. Use for 卡点混剪, 卡点剪辑, 踩点视频, beat-sync montage, rhythm edit, 节奏剪辑, 音乐驱动剪辑, or when the user wants cuts that land on the beat.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/beat-density.md` and `references/shot-fitness.md`).

It sits in Media & Creative, covering Video production. The repository describes itself as: Open-source, local-first conversational AI video editor with a professional multi-track timeline, Agent Skills, MCP integration, and Remotion rendering. The licence is AGPL-3.0.

When your agent uses it

  • Beat-sync montage
  • The user wants cuts that land on the beat

Example prompts

  • “/beat-sync-montage”

Workflow steps

10 steps, taken from the first numbered list in SKILL.md.

  1. Confirm the track is on the timeline and identified. Read the music first: BPM, meter, sections, and energy shape. Use music-intelligence…
  2. Judge whether the material actually suits a beat edit. See references/shot-fitness.md. Footage with no clear motion onset, or whose motion…
  3. Choose the density arc before choosing individual cut points. See references/beat-density.md. Density is a property of the whole piece…
  4. Assign content to the music's structure. Map sections to narrative roles — intro to the hook, verse to context, build to escalation…
  5. Pick the anchor points first: 3–6 moments where a cut must hit a downbeat or a section boundary because the content has real impact there…
  6. Fill between anchors at the density chosen for that section. Do not fill uniformly — uniform filling is what makes an edit feel mechanical.
  7. Reserve breathing room. See references/beat-density.md. A montage that never stops cutting exhausts the viewer and hides the anchors you…
  8. Check motion continuity across cuts. See references/shot-fitness.md. Consecutive cuts should not fight each other in screen direction or…
  9. Plan with music_edit_plan, show the bounded summary and any cap warning, and get acceptance. Then apply with sync_cuts_to_music and the…
  10. QA by watching, not by counting. See the rules below. A cut list that is 100% on-beat can still be a bad edit.

What it can do on your machine

Read from SKILL.md and the folder at commit 2e6f4a2. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Beat Sync Montage loads about 1.2k tokens when it runs, and up to ~2.9k if it reads all its reference files. Until then it costs about 63 tokens; SKILL.md has 672 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~63
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from 0xsline/OpenChatCut at commit 2e6f4a2, republished under its AGPL-3.0 licence (© 0xsline). 672 words, ~1,210 tokens.

Download SKILL.mdSave it as .claude/skills/beat-sync-montage/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
beat-sync-montage
description
Plan and build a finished beat-synced montage where cut placement serves the content, not just the metronome. Use for 卡点混剪, 卡点剪辑, 踩点视频, beat-sync montage, rhythm edit, 节奏剪辑, 音乐驱动剪辑, or when the user wants cuts that land on the beat.

Beat Sync Montage

Use this workflow when the edit should be driven by music. The failure mode to avoid is a metronome edit: every cut technically lands on a beat, and the result still feels mechanical, tiring, or unrelated to what is on screen.

This workflow decides what to cut and why. It does not re-explain the music tools — when you reach an execution step, follow music-intelligence for analyze_music, music_edit_plan, and sync_cuts_to_music. Load it there.

This is a OpenChatCut-native workflow. Use the current project, source assets, asset-frame inspection, AV/script context, and OpenChatCut editing tools.

When to switch workflows

  • Beat-synced photos on a locked, empty track → music-intelligence handles this directly with music_image_plan. This workflow is for video montage.
  • One long source cut to speech rhythm → long-video-to-shorts.
  • Many clips packaged as highlights without music driving the cut → multi-clips-to-reels.
  • N distinct beat-synced variants from one pool → batch-montage-variants, using this workflow for each cut.

Workflow

  1. Confirm the track is on the timeline and identified. Read the music first: BPM, meter, sections, and energy shape. Use music-intelligence → analyze_music or inspect_music; never request the CLAP embedding.
  2. Judge whether the material actually suits a beat edit. See references/shot-fitness.md. Footage with no clear motion onset, or whose motion contradicts the music's energy, will not improve by cutting on every beat. Say so instead of forcing it.
  3. Choose the density arc before choosing individual cut points. See references/beat-density.md. Density is a property of the whole piece, not a per-cut decision: a verse and a chorus should not be cut the same way.
  4. Assign content to the music's structure. Map sections to narrative roles — intro to the hook, verse to context, build to escalation, drop/chorus to payoff. Cut density follows that map.
  5. Pick the anchor points first: 3–6 moments where a cut must hit a downbeat or a section boundary because the content has real impact there. See references/beat-density.md. Everything else is filler rhythm between anchors.
  6. Fill between anchors at the density chosen for that section. Do not fill uniformly — uniform filling is what makes an edit feel mechanical.
  7. Reserve breathing room. See references/beat-density.md. A montage that never stops cutting exhausts the viewer and hides the anchors you built in step 5.
  8. Check motion continuity across cuts. See references/shot-fitness.md. Consecutive cuts should not fight each other in screen direction or motion axis unless the collision is deliberate.
  9. Plan with music_edit_plan, show the bounded summary and any cap warning, and get acceptance. Then apply with sync_cuts_to_music and the returned analysisRef. Follow music-intelligence for both.
  10. QA by watching, not by counting. See the rules below. A cut list that is 100% on-beat can still be a bad edit.
Show full SKILL.md (226 more words)Show less

Plan Format

  • Track, BPM, meter, section map with timecodes
  • Density arc per section (sparse / medium / dense / rest)
  • Anchor points: frame, musical event, and what lands there
  • Shot order with the reason each shot sits where it does
  • Breathing points: where the edit deliberately stops cutting
  • Risks: weak motion onsets, motion-direction collisions, sections that outrun the material

Rules

  • Anchors over uniformity. Three or four meaningful downbeat hits beat forty evenly spaced ones.
  • Density follows the music, not the maximum. Dense cutting is a choice for a section, not a default for the piece.
  • Never cut a strong shot short to satisfy a beat. If a moment needs four beats, give it four beats and adjust around it.
  • Protect the hook. The first downbeat hit should land within the first three seconds. A beat edit that eases in has wasted its advantage.
  • Breathe. At least one held shot per 15 seconds unless the brief explicitly asks for relentless pace.
  • Motion must be legible. A cut that lands on a beat but lands mid-action with no visible onset reads as an error, not as rhythm.
  • The cut serves the content. If a section has nothing worth cutting, hold the shot and let the music carry it.
  • Do not use captions to invent claims the footage does not support.
  • Report honestly when the material does not support the requested density.

© 0xsline, AGPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (references) in src/agent/skills/beat-sync-montage of 0xsline/OpenChatCut.

  • SKILL.md
  • references/beat-density.md
  • references/shot-fitness.md

Open the folder on GitHubat commit 2e6f4a2

Compare with similar skills

Beat Sync Montage next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Beat Sync Montage compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Beat Sync Montage this skill0xsline/OpenChatCut2.2k—~1.2kAutomated safety check: PassAGPL-3.0
HyperFrames Animationheygen-com/hyperframes60k3 repos~2.1kAutomated safety check: PassApache-2.0
Stitch to Remotion Walkthrough Videosgoogle-labs-code/stitch-skills8.5k6 repos~3.2kAutomated safety check: NotesApache-2.0
Faceless Explainer Videoheygen-com/hyperframes60k3 repos~7.7kAutomated safety check: NotesApache-2.0
Video Understandcalesthio/OpenMontage66k—~841Automated safety check: PassAGPL-3.0
Video ShotcraftVincentwei1021/video-shotcraft11k—~2.6kAutomated safety check: PassApache-2.0

Similar skills

  • HyperFrames Animation

    heygen-com/hyperframes

    Collects motion rules, scene blueprints, transitions and runtime adapters for HyperFrames video compositions, with GSAP as the default animation runtime.

    60k GitHub starsUsed in 3 repos~2.1k tokens
    Media & CreativeAuto-check passed

  • Stitch to Remotion Walkthrough Videos

    google-labs-code/stitch-skills

    Official

    Builds walkthrough videos from Stitch design projects using Remotion, with transitions, zoom effects and text overlays on each screen.

    8.5k GitHub starsUsed in 6 repos~3.2k tokens
    Media & CreativeAuto-check: notes

  • Faceless Explainer Video

    heygen-com/hyperframes

    Turns an article, notes or a topic brief into an explainer video whose visuals are invented per scene, built frame by frame in HyperFrames with no footage.

    60k GitHub starsUsed in 3 repos~7.7k tokens
    Media & CreativeAuto-check: notes

  • Video Understand

    calesthio/OpenMontage

    Understand video content locally using ffmpeg frame extraction and Whisper transcription.

    66k GitHub stars~841 tokensUpdated 7 days ago
    Media & CreativeAuto-check passed

  • Video Shotcraft

    Vincentwei1021/video-shotcraft

    Makes cinematic product videos with Remotion from shot recipe cards, a ready template, real page screenshots, camera moves and sound design, or builds a single animated shot.

    11k GitHub stars~2.6k tokensUpdated 6 days ago
    Media & CreativeAuto-check passed

  • Figma to HyperFrames

    heygen-com/hyperframes

    Imports Figma assets, brand tokens, components and motion into a HyperFrames video composition, using the Figma REST API with a connector or native export for shaders.

    60k GitHub starsUsed in 3 repos~4.5k tokens
    Media & CreativeAuto-check: notes

More from 0xsline/OpenChatCut

All 31 skills in this repo

  • OpenChatCut Video Editing

    0xsline/OpenChatCut

    Connects an MCP-capable agent to the local OpenChatCut video editor to inspect and edit projects through draft edit sessions, with manual approval by default.

    2.2k GitHub starsUsed in 1 repo~655 tokens
    Auto-check passed

  • Video Shader Generator

    0xsline/OpenChatCut

    Generates WebGL shaders for video effects, transitions, masks and color grades in the OpenChatCut editor, trying built-in catalog effects such as zoom before making anything new.

    2.2k GitHub starsUsed in 1 repo~3.2k tokens
    Auto-check passed

  • AI Image Generation

    0xsline/OpenChatCut

    Generates still images through the submit_image tool, choosing among Fal.ai, gpt-image-2, nano-banana, MiniMax image-01 and Grok Imagine by configured keys.

    2.2k GitHub stars~1.3k tokensUpdated 4 days ago
    Auto-check passed

  • Livestream to Clips

    0xsline/OpenChatCut

    Cuts a livestream recording into evidence-backed, platform-ready clips by combining transcript, visual, audio and genre-specific signals.

    2.2k GitHub stars~2.7k tokensUpdated 4 days ago
    Auto-check passed

  • Music Generation

    0xsline/OpenChatCut

    Generates instrumentals, songs, soundtracks and covers through Mureka, MiniMax, Atlas Cloud or Sonilo using the `submit_music` tool.

    2.2k GitHub stars~1.1k tokensUpdated 4 days ago
    Auto-check passed

  • AI Video Generation

    0xsline/OpenChatCut

    Submits AI video generation jobs to Fal.ai, Seedance, Kling, MiniMax Hailuo, xAI Grok Imagine or OFox for text-to-video, image-to-video, transitions and clip extension.

    2.2k GitHub stars~4.3k tokensUpdated 4 days ago
    Auto-check passed

Categories

Questions about Beat Sync Montage

What does Beat Sync Montage do?

Plan and build a finished beat-synced montage where cut placement serves the content, not just the metronome. Beat Sync Montage is an agent skill from 0xsline/OpenChatCut. Plan and build a finished beat-synced montage where cut placement serves the content, not just the metronome.

When should I use Beat Sync Montage?

Beat Sync Montage fits situations like: beat-sync montage; the user wants cuts that land on the beat.

How do I install Beat Sync Montage in Claude Code?

Run `npx skills add 0xsline/OpenChatCut --skill beat-sync-montage -a claude-code`. Or copy the skill folder (src/agent/skills/beat-sync-montage in 0xsline/OpenChatCut) into .claude/skills/beat-sync-montage in your project. Claude Code loads it when a task matches its description.

How do I install Beat Sync Montage in Codex?

Run `npx skills add 0xsline/OpenChatCut --skill beat-sync-montage -a codex`. Or copy the skill folder (src/agent/skills/beat-sync-montage in 0xsline/OpenChatCut) into .agents/skills/beat-sync-montage in your project. Codex loads it when a task matches its description.

Can I use Beat Sync Montage in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add 0xsline/OpenChatCut --skill beat-sync-montage -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/beat-sync-montage, .gemini/skills/beat-sync-montage, .github/skills/beat-sync-montage and .opencode/skills/beat-sync-montage in your project.

What does Beat Sync Montage need to run?

SKILL.md names no scripts, command-line tools or credentials: Beat Sync Montage is instructions for the agent only.

Does Beat Sync Montage access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Beat Sync Montage safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Beat Sync Montage use?

Beat Sync Montage is published under the AGPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Beat Sync Montage use?

About 1.2k tokens (SKILL.md is roughly 4.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.7k tokens, read only when the agent opens those files.

What are the alternatives to Beat Sync Montage?

Skills that share tags, products or a category with Beat Sync Montage: HyperFrames Animation (heygen-com/hyperframes, 60k stars), Stitch to Remotion Walkthrough Videos (google-labs-code/stitch-skills, 8.5k stars), Faceless Explainer Video (heygen-com/hyperframes, 60k stars) and Video Understand (calesthio/OpenMontage, 66k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Beat Sync Montage?

0xsline (a GitHub user) maintains it in 0xsline/OpenChatCut, which has 2,235 GitHub stars. The repository holds 31 skills in this directory. The repository was last updated on October 7, 2026.

Source: 0xsline/OpenChatCut on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.