Video Crop (Electron + FFmpeg)

Desktop app for Ubuntu that lets you load a large video, select a time range, define an image crop, and export the result using ffmpeg.

This app has been developed exclusively using vibecoding with Codex.

What the app does and how it works

• Open a local video and preview it inside the app.
• Define a time range with a dual slider and frame controls.
• Optionally enable image cropping, draw the area, and adjust its corners.
• On export, the app runs ffmpeg to trim the time and, if there is an image crop, applies the crop filter.

Requirements

• Only works on Ubuntu.
• Node.js + npm
• ffmpeg installed on the system (sudo apt install ffmpeg)

Installation

npm install

Development

npm run dev

Packaging for Ubuntu

npm run dist

Generates AppImage and deb in dist/.

Notes

• "Re-encode" mode is slower but more precise.
• "Fast cut" mode uses -c copy and may cut on the nearest keyframe.