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video-edit · calesthio — Claude Code skill: what it does, how to install

Local video editing via ready-made instructions for the ffmpeg CLI tool. It helps slice footage, adapt aspect ratios for social networks, and compress tracks.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓ 
npx skills add calesthio/OpenMontage --skill video-edit -a claude-code
Open on GitHub

What video-edit does

The skill equips the agent with recipes for running ffmpeg and ffprobe directly. No wrapper scripts are needed. The assistant generates exact terminal commands to trim footage, stitch clips losslessly using -c copy, or strip audio into an MP3 track.

It includes ready-made aspect ratio filters for social channels. Videos can be fitted to TikTok vertical resolution of 1080x1920 or standard YouTube dimensions with balanced letterboxing. Compression uses the CRF scale, where 23 serves as the default setting.

Without ffmpeg and ffprobe installed in the system PATH, every command will fail. On macOS, the package installs through Homebrew, while Debian and Ubuntu use apt. Extended command flags are documented in references/operations.md.

What it helps with

  • trim video segments quickly without re-encoding via -c copy
  • reformat horizontal footage for TikTok or Instagram reels
  • join multiple clips into one file using a text list
  • extract audio tracks to MP3 or replace background sound
  • compress video files with CRF quality controls

Example prompts for the agent

  • Trim video.mp4 from 00:00:30 to 00:01:45 without re-encoding
  • Resize video.mp4 to 1080x1920 with black bars for TikTok
  • Speed up video.mp4 to 2x speed and save it as fast.mp4

How to install video-edit

1Skills CLI (Vercel)

npx skills add calesthio/OpenMontage --skill video-edit -a claude-code

2Manually: put the files in place

~/.claude/skills/video-edit/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/video-edit/

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about video-edit

How do I install video-edit in Claude Code?

Run npx skills add calesthio/OpenMontage --skill video-edit -a claude-code. The skill file will be placed in ~/.claude/skills/video-edit/SKILL.md.

What does the video-edit skill do?

It provides the AI agent with direct command recipes for ffmpeg. You can trim clips, overlay watermarks, adjust playback speed, and reformat footage for social media platforms.

What dependencies must be installed beforehand?

You need ffmpeg and ffprobe installed on your machine. On macOS, install them using brew install ffmpeg, and on Ubuntu or Debian, run sudo apt install -y ffmpeg.

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