Nice bro. My Add-on "Streaming enhanced" also has Speed Control for Netflix. I also programmed and released my addon because the others were worse. Keep up the good work.
https://addons.mozilla.org/en-US/firefox/addon/netflix-prime-auto-skip/

Works exactly like it is supposed to. And it works on other websites too!

I'm learning a new language and your plugin is exactly what I was looking for <3 just like the user before me said, if it had a customizeable keyboard shortcut to increase / decrease speed on the fly, it would rock even more! cheers

yes work well, and actually is a good idea, even for people need to learn language they listen slow, or go fowards ,, will be amazing a sort of controll like + and - or mouse to control the speed, congratulations!

Could you add a 1.25x, 1.75x, 2.25x, and 2.75x? Thank you.

Otherwise it works great!

A TERRIBLE THING! But, a terrible thing that works perfectly. :)