360 videos with VR "support"
With vr-video-player-gitAUR and xdotool VR video player (or any other window meant for VR) is easy.
Launch video with mpv and:
$ vr-video-player --zoom 0.4 $(xdotool selectwindow)
There are --sphere (default) --sphere360 --flat and --plane modes. Note that the size of the window matters for the VR composition.
Perhaps more useful to VR pages or so.