breaks vimeo and twiter vids. need firefox addon with button to toggle the setting. https://addons.mozilla.org/en-US/firefox/addon/autoplay-toggle/ https://add

breaks vimeo and twiter vids. need firefox addon with button to toggle the setting. https://addons.mozilla.org/en-US/firefox/addon/autoplay-toggle/ https://addons.mozilla.org/en-US/firefox/addon/autoplay-togg...