This is the one, I use it too: https://addons.mozilla.org/en-US/firefox/addon/video-background-play-fix/ https://addons.mozilla.org/en-US/firefox/addon/video-ba

This is the one, I use it too: https://addons.mozilla.org/en-US/firefox/addon/video-background-play-fix/ https://addons.mozilla.org/en-US/firefox/addon/video-backgro...