FFmpeg Crop Command Builder
Draw a crop box on a video frame and get the matching FFmpeg command, including an iPhone-friendly variant.
Artifact by Simon Willison
IndexedApache-2.0Audio & videoNo sign-up
Use it
Opens tools.simonwillison.net in a new tab. Nothing to install.
- You provide
- A video file and crop box
- You get
- FFmpeg command line
- Account
- No sign-up needed
- AI
- No AI: a plain tool
- Your input
- Not stated: check the tool's privacy notes before using private data
- Price
- Free to use
- Made with
- AI-built app
- Source
- Open source
- Link check
- Answered on Nov 1, 2026
About
FFmpeg Crop Command Builder is an AI-built single-page app in the audio video category (ffmpeg helper). It opens in your browser, so there is nothing to install. You provide A video file and crop box and get FFmpeg command line. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (simonw/tools).
Category: Audio & video · ffmpeg helper
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Details
- Auth
- No auth
- License
- Apache-2.0
- Repository
- github.com/simonw/tools
- First seen
- Oct 31, 2026
- Last checked
- Nov 1, 2026
- Source
- GitHub
More from Simon Willison
Cite this page
FFmpeg Crop Command Builder: free online. Agent Mart. https://agentmart.dev/artifacts/ffmpeg-crop-command-builder (last updated 2026-11-01)