http://kb.mozillazine.org/Images_or_animations_do_not_load https://support.mozilla.org/en-US/kb/fix-video-audio-problems-firefox-windows https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues https://support.mozilla.org/en-US/kb/html5-audio-and-video-firefox https://support.mozilla.org/en-US/kb/troubleshoot-issues-with-plugins-fix-problems https://support.mozilla.org/en-US/kb/warning-unresponsive-plugin ----------------------- https://support.mozilla.org/en-US/questions/1359657#answer-1463359 and updated to 95.0. . . . I finally found where the plugin "Widevine Content Decryption Module provided by Google Inc." was not updating to the newest version of December 1, 2021. Ver #4.10.2391.0 cor-el; Make sure you have the latest Widevine version. You can toggle DRM off/on to see if that makes Firefox (re)load DRM components. * Settings -> General: Play DRM * https://support.mozilla.org/en-US/kb/enable-drm You can possibly check the XHR requests in the Browser Console if this doesn't work. * https://developer.mozilla.org/en-US/docs/Tools/Browser_Console