I would like to get an actual answer to an archived question that I didn't find very useful. This is the one: https://support.mozilla.org/en-US/questions/1301997 . I have also attached an image of a reply to this question that I relate to a lot, but unfortunately it didn't get an answer. So, I would like to ask the same question as this guy asked: ''For privacy reasons, I would like to hide the notification bar that pops-up in front of all windows, showing the video's title and thumbnail, but not the function for Control Media Playback. Is it possible?'' If you couldn't understand the question, I'll explain again. So I attached another image (the second one) for demonstration. This shows this pop-up that is hard to name, so I'll call it a pop-up; ''I would like to hide the video title and thumbnail from this pop-up just for privacy reasons. I don't think this is currently possible because the only configuration I could find was "media.hardwaremediakeys.enabled", but if I disable it it would remove the function completely.''