It works!

Completely useless. Does not stay on top of the screen.

Stopped working after the last few updates!

Simple and efficient - Love it !

Best Pop out/ Picture in picture player. Thanks Dev.

this app does not work, i need to get to the firefox asian website to comment on this, because on the french version i am not even able to leave a comment, that s a shame. App not working at all for me rebooted my firefox, add one enable, does not work. very sad

For anyone missing ALWAYS ON TOP feature. There is small utility which I run automatically with Windows startup. Hitting CTRL+SPACE will make any window to be ALWAYS ON TOP. It is useful not only for video popup but also if I need Excel, terminal or anything to be always on my screen. Download here, no install needed:
http://img.labnol.org/di/always-on-top.zip

Coming from Opera I missed the popout video feature. I tried few add-ons that did not work at all before I found this one. This one works flawlessly, and the setting to chose pop-out video size makes it better than anything I tried so far. The only thing that can get better is the icon used, but this is nitpicking.

this needs ALWAYS ON TOP feature to be truely great