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rec2gif

v0.1.1

Published

Convert macOS screen recordings to optimized GIFs for GitHub PRs

Vulnerabilities

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Links

Git

Maintainers

sei0sei0

Keywords

gifscreen-recordingmacosffmpeggithubcliconverteroptimization

Readme

rec2gif

Convert macOS screen recordings to optimized GIFs for GitHub PRs.

One command. 30s recording → ~3MB GIF. GitHub-ready.

$ rec2gif
Found: ~/Downloads/Screen Recording 2026-03-17.mov (12.4MB)
Converting...
  → Generating palette...
  → Creating GIF...
  → Optimizing...

Done! Screen Recording 2026-03-17.gif (2.8MB)
✓ GitHub ready (under 10MB)

![demo](Screen Recording 2026-03-17.gif)

Install

npm install -g rec2gif

Requires ffmpeg and gifsicle:

brew install ffmpeg gifsicle

Agent Skill

Install as an agent skill so your AI coding agent knows how to use rec2gif:

npx skills add sei0/rec2gif

Usage

rec2gif                          # Auto-detect latest screen recording
rec2gif recording.mov            # Convert specific file
rec2gif -w 480 -f 10 --copy      # Custom settings + copy path to clipboard

When multiple screen recordings are found, you'll be prompted to select one:

Found 5 recordings:

  1) 화면 기록 2026-03-17 오후 5.39.23.mov (375KB, 2026-03-17 17:39)
  2) Screen Recording 2026-03-15 at 2.30.00 PM.mov (1.2MB, 2026-03-15 14:30)
  3) ScreenRecording_01-08-2026 14-19-32_1.mov (10.6MB, 2026-01-08 14:19)

Select [1]:

Options

| Flag | Default | Description | |------|---------|-------------| | -w, --width | 960 | Output width in pixels | | -f, --fps | 15 | Frames per second | | -l, --lossy | 30 | Lossy compression level (0-200) | | -o, --output | auto | Output file path | | -d, --max-duration | 60 | Max video duration in seconds (hard cap: 120) | | --no-optimize | | Skip gifsicle optimization | | --copy | | Copy Markdown snippet to clipboard |

How it works

  1. Palette generation — ffmpeg analyzes the video to create an optimal 256-color palette
  2. GIF creation — ffmpeg converts using the palette with dither=none (best for screen recordings with crisp UI text)
  3. Optimization — gifsicle applies -O3 --lossy compression

Output targets GitHub's 10MB image limit. Default settings (960px, 15fps) produce ~1-5MB GIFs for typical 3-10 second clips.

Auto-detection

Searches ~/Downloads for files matching known screen recording patterns:

  • English: Screen Recording *.mov/mp4
  • Korean: 화면 기록 *.mov/mp4
  • Japanese: 画面収録 *.mov/mp4
  • Chinese: 录屏 *.mov/mp4, 螢幕錄製 *.mov/mp4, 螢幕錄影 *.mov/mp4
  • iPhone: ScreenRecording_*.mov

If no known patterns match, falls back to showing recent .mov/.mp4 files.

License

MIT