I use Enhancer for Youtube (https://addons.mozilla.org/en/firefox/addon/enhancer-for-youtube/ https://addons.mozilla.org/en/firefox/addon/enhancer-for-you...)

I use Enhancer for Youtube (https://addons.mozilla.org/en/firefox/addon/enhancer-for-youtube/ https://addons.mozilla.org/en/firefox/addon/enhancer-for-you...) Allows hiding(*) and converting to normal video. (*) "Firefox 103+ and layout.css.has-selector.enabled set to True - Experimental CSS feature not fully working on Firefox, some rendering issues may occur"