MarsSeed [1] filed a deletion request for gst-plugins-vr-git [2]: Discontinued plugin since 2018.[a]
No need to keep this experimental VCS package. Also there are alternatives: some mainstream media players already support 3D VR videos. [a]: https://github.com/lubosz/gst-plugins-vr [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/gst-plugins-vr-git/
