about:config → media.videocontrols.picture-in-picture.enabled → false

Oh thanks, I was always looking in about:preferences but found nothing except toggling the video controls for the picture-in-picture!

I really enjoy this as a feature. There are many times that I don't need a video full frame, but don't want to see the rest of the website page either (I'm looking at you YouTube). I can just pop the video out, and even shrink its size, and then go back to whatever else I need to be looking at.

Sadly, there are so many videos out there that do not need to be videos, yet that's how they are presented for sometimes rational reasons on the "creator's" part.

I occasionally use that feature. But absolutely every single time is by mistake and it has negative effects on my mood. Still love Firefox though.

I managed to somehow disable the button that appears on the video without totally disabling the feature. I find it a lot more ergonomic to hit ctrl+shift+] to toggle it.

I pretty much only use it for videos yt-dlp + mpv can't open though.

  >I managed to somehow disable the button that appears on the video without totally disabling the feature

Not too hard really. This seems to do it:

media.videocontrols.picture-in-picture.enabled -> true

media.videocontrols.picture-in-picture.video-toggle.enabled -> false

media.videocontrols.picture-in-picture.keyboard-controls.enabled -> true

Whoa, really? I use it all the time and love it. Why do you dislike it so much?

I disliked it because when I click on another link I expect to see the new webpage and nothing else. Instead, I have the video continuing playing on the side so I have to manually close it aswell. That combined with the video player taking up unnecessary space for me, it's even worse on the phone, some picture-in-picture players eat up 1/4 of the screen.

It's a giant checkbox in the browsing settings...

You mean the "Enable picture-in-picture video controls"?

That only affects the controls of the PIP mode, the question was how to completely disable PIP mode. A sibling comment posted a about:config setting to do this.