Quick update for anyone still reading this thread:
@[email protected] As with any other app, we flagged Fennec and Mull with KnownVuln until the app is updated. Contributors fixed the issues that delayed versions 130 and later. Stand by for the build.
To expand on this, there are two settings you can put in
user.js
/prefs.js
(desktop) or via about:config (mobile), documented on the Mozilla Wiki:user_pref("media.autoplay.default", 5); user_pref("media.autoplay.blocking_policy", 2);
Two bonus settings if you want to get rid of the “do you want to enable DRM?” pop-in bar when hitting one of those sites:
user_pref("media.gmp-widevinecdm.enabled", false); user_pref("media.gmp-widevinecdm.visible", false);
hth