Better IMO than the two alternatives (Disable HTML5 autoplay & Disable AutoPlay), and more recently updated. But would be so much better if it had 1) a whitelist 2) a toolbar icon to toggle the extension on and off and 3) a more attractive or minimal 'Play video' icon. Add these and this will be perfect.

So far it's working beautify, but it would be much better, it there was a short cut at the top right where the other extension shortcuts live to turn it on and off when you want to watch a video. As far as I know I have to go to the extensions find it then enable/disable from there.

Seems to work from what I see so far. Too many addons make big claims, but this stops videos right after they get ready to play. Will keep my eye on it with other sites.