[Unit]
Description=camera-streamer web camera
After=network.target

[Service]
ConditionPathExistsGlob=/dev/v4l/by-id/usb-*-video-index0
ExecStart=/usr/local/bin/camera-streamer \
  -camera-path=/dev/video0 \
  -camera-format=JPEG \
  -camera-width=1920 -camera-height=1080 \
  -camera-fps=30 \
  ; use two memory buffers to optimise usage
  -camera-nbufs=2 \
  ; the high-res is 1920x1080
  -camera-high_res_factor=1.0 \
  ; the low-res is 960x540
  -camera-low_res_factor=2.0

DynamicUser=yes
SupplementaryGroups=video i2c
Restart=always
RestartSec=10
Nice=10
IOSchedulingClass=idle
IOSchedulingPriority=7
CPUWeight=20
AllowedCPUs=1-2
MemoryMax=250M

[Install]
WantedBy=multi-user.target