They will be enabled by default as they are working. We already have the issue of some platforms having it and others not. Some Android devices have it with Fir

They will be enabled by default as they are working. We already have the issue of some platforms having it and others not. Some Android devices have it with Firefox for Android and some don't for example. Linux distro's could enable the GStreamer backend and gain it while others don't as another. For detection sites should use the API "canPlayType" and similar functionality to detect if the browser supports playback.