Video Speed Controller is one, works on HTML5 Video (including YouTube, but not ...

		jodrellblank on March 1, 2021 \| parent \| context \| favorite \| on: Your Thinking Rate Is Fixed Video Speed Controller is one, works on HTML5 Video (including YouTube, but not limited to it). For FireFox: https://github.com/codebicycle/videospeed I think, forked from Chrome: https://github.com/igrigorik/videospeed