Uses yt-dlp then extracts it to text encoding. Don't come in to this expecting something great or beautiful, but I had fun. The gif is genuine, captured in remotion from the ffmpeg -> chafa.
Your mileage may vary since there is a Claude Code bug around raw bytes per line. If they fix that, then higher resolution videos inside Claude Code is on the table. (I'm sure that will be top priority for Anthropic)