Great, simple controller. I use this for every video I watch.

This is amazing! Especially because it also works with TWITCH! So you can now slow down, speed up and even rewind twitch streams!

Works perfectly. When using Flash videos (rather than HTML5) it won't work, so you have to switch to chrome and download it there (in chrome it works).

SIMPLE! Helps me do my college research.

ممتاز

Works great, does exactly what I wanted it to, except for one thing:

When the add-on is enabled, I can't play two videos at the same time (say, I have two YouTube tabs open for, say, a podcast with no background music and background music). I don't know why; I don't know if that's a bug or a feature, but if it's a feature, it's a bad one, and I'd at least like to see an option to disable that.

If it is a bug, please fix it. I'm adding it as an issue on your GitHub.

Keep up the good work, though. Again, I gave this a 4/5 for a reason.