Not working? Bewertet mit 5 von 5 Sternen

I've been using this add-on for about 6 months, but seems it isn't working as of today :/
Fix it please D:

Diese Bewertung wurde für eine vorherige Version des Add-ons (0.97) abgegeben. 

Fixed it

Hi,
YouTube has changed video embed urls. That broke the extension. Fixed it.

However the new version (0.971) might still be in review but you can download it from https://addons.mozilla.org/en-us/firefox/addon/smartvideo-for-youtube-mytube/versions/