[Unit]
Description=camera-streamer web camera for USB camera on Raspberry PI
After=network.target
ConditionPathExistsGlob=/dev/v4l/by-id/usb-*-video-index0

[Service]
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=3 \
  ; the high-res is 1920x1080
  --camera-snapshot.height=1080 \
  ; the video/webrtc is 1280x720
  --camera-video.height=720 \
  ; the stream is 853x480
  --camera-stream.height=480 \
  --http-listen=0.0.0.0 \
  --http-port=8080 \
  --rtsp-port

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