MPV play on boot service

gistfile1.txt

[Unit]
Description=Play video at startup
After=multi-user.target

[Service]
Environment="DISPLAY=:0"
ExecStart=/bin/bash -c '/home/orangepi/playvideo.sh'
User=orangepi
Restart=on-abort
RemainAfterExit=yes
Type=simple

[Install]
WantedBy=multi-user.target

######################################################################

And then the playvideo.sh:
#!/bin/bash
TRAP '' HUP
cd /home/orangepi
/usr/bin/mpv --vo=drm --loop video.mp4
echo >> /tmp/playvideo.log