From ArchWiki

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.

--Pulec (talk) 19:11, 2 August 2021 (UTC)

Troubleshooting : 2* compositors

There are two chapters about compositor settings, candidates for merging + simplification:

6.3 Problems with window compositors

6.6 Use mpv with a compositor

Ua4000 (talk) 19:54, 7 February 2022 (UTC)