Extracts the audio from videos on YouTube, Vimeo, and many more sites and sends it to Huffduffer.
Add this bookmarklet to your browser and use it on any video page:
Warning: the UI is not great. Downloading and transcoding video takes time, often tens of seconds to minutes. Sometimes you'll see progress text, but often you'll see nothing for a while, even at the very beginning. Please be patient. Improvements are welcome!
Audio files are stored for 30 days, then deleted. Be sure to download them before then!
Source at github.com/snarfed/huffduff-video.