I just downloaded this add on. Wow, just being able to fast forward through commercials, adjusting the play back speed with the mouse, and using the space-bar to stop and start the video are such a game changer. I use Youtube mostly for educational videos (really:), for example tool making tutorials, and I often take screenshots at crucial sections in the video. Being able to go backwards or forwards one frame at a time, so I get just the right picture, is simply amazing. Thank you to the developer.

I am looking for the donate button I saw on the Firefox add on pop up page. This person deserves a donation.

I absolutely love this extension! Funny. Easy. Effective. Works great!

Works perfectly fine with Waterfox too, using 2.0.124.2 on Waterfox G6.0.14 (64-bit).
Manifest needed a tiny edit :)

your extension saved my soul from youtube's awful new UI - THANK YOU!

its perfect!!