So i've followed guides
https://forum.proxmox.com/threads/amd-ryzen-7-renoir-4750g-apu-and-igpu-pass-thru-to-windows-10-guest.84849/page-3
https://emby.media/community/index.php?/topic/49680-howto-vaapi-transcoding-inside-lxc-container/
and runinng vainfo on the host shows the list of...