A must extension if you visit often youtube!

Works great ! No bugs so far. Very sweet themes too.

It is a really helpful extension. it has many features but I use it especially to "Pin the video player when scrolling down the page", "Automatically remove annotations" and "Automatically pause videos opened in background tabs". It has many more features too but I do not need them.

I've been using this great add-on for a while now and it works well. I wish it had option to get rid of that horrible miniplayer

How do I initialize the setup toolbar?

Pretty good, love the speed control. Would be great if you could set it to open music videos with 1.0 speed and other videos with the configured speed (maybe it could check the section video's in, music is usually in "Music" section).
Other than that, the biggest issue I have with it is that it doesn't seem to be free and open source.

Really, Really like it when it works. However the menu settings are over the top complex.
Big failure right now is when the video playback is increased followed with a Volume click, the playback is reset to normal and fails to work until the video is reset. This fail is really a trial, since most videos need the sound boosted and increased playback speed.