Simon Willison’s Weblog

Subscribe

Wednesday, 9th July 2025

Tool FFmpeg video crop — Generate FFmpeg crop commands by uploading a video file and interactively defining a crop area using a draggable overlay. The tool provides both standard and iPhone-compatible FFmpeg command formats that automatically update as you adjust the crop box dimensions and position. This eliminates the need to manually calculate crop parameters for video editing workflows.

Infinite Monkey (via) Mihai Parparita's Infinite Mac lets you run classic MacOS emulators directly in your browser. Infinite Monkey is a new feature which taps into the OpenAI Computer Use and Claude Computer Use APIs using your own API keys and uses them to remote control the emulated Mac!

Here's what happened when I told OpenAI Computer Use to "Open MacPaint and draw a pelican riding a bicycle" - video sped up 3x.

# 7:07 pm / macos, mihai-parparita, ai, webassembly, generative-ai, llms, ai-agents, pelican-riding-a-bicycle, computer-use