Rated 4 out of 5 stars

The addon works great every time, no crashes and no resource-intensive. does pretty good what it says it does.

BUT there are a few things that might be good to add.
-Make the player visible through all tabs, not only the one where the video was opened.
-Make the player follow the border of the browser (if you open a video with the browser maximized and then you resize it, the video will get lost)
-Make the player able to drag.

This review is for a previous version of the add-on (2.8.3.1-signed).