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Simon Willisonpublished ()ingested

Video compressor

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AI summary · glm-5.3-flash

Simon Willison built a browser-based video compressor using the WebAssembly FFmpeg build, generated by Claude Fable 5.1 in Claude Code for web.

Willison recorded a demo video of his Equal Earth animation and wanted an optimized web-publishable version. He had Claude Fable 5.1 running in Claude Code for web build a compressor around the WebAssembly port of FFmpeg. The post is a short vibe-coding demonstration, not a model release or security event.

  • Tool built by Claude Fable 5.1 in Claude Code for web
  • Uses the WebAssembly build of FFmpeg in the browser
  • Demonstrates agentic coding for small utility creation
Full article

Tool: Video compressor I recorded a short demo video of my Equal Earth animation on my phone and wanted to publish an optimized version of that video (using FFMPEG) on my blog, so I had Claude Fable 5.1 in Claude Code for web build me this tool using the WebAssembly build of FFMPEG. Tags: ffmpeg , video , webassembly , claude , claude-code , claude-mythos-fable

This source does not provide full text. Read it at simonwillison.net.