How to stop autoplay of videos? | Firefox Support Forum | Mozilla ... 13 Jun 2013 ... Some videos on YouTube still autoload and autoplay. What else can I try? .... When the boolean was set to false, the "ask to activate" dropdown option was unavailable. Hope it helps.
The video element | HTML5 Doctor 18 Jun 2009 ... Youtube and the like autoplay their videos. But before you ...... “controls” is false by default AFAICT, :D ).