I hadn't come across mpvpaper before, so I decided to look it up. While it seems interesting, my initial impression is that it might be a bit more resource-intensive compared to what's achievable on X11. On X11, you can set up a video wallpaper using mpv with surprisingly little effort and minimal code....

if pgrep mpv; then
    pkill mpv; else
    xwinwrap -ni -fs -s -st -sp -b -nf -- mpv --profile=wallpaper -wid %WID /home/furycd001/wallpapers/wallpaper.mp4
  fi