[Unit]
Description=BubbleCam camera capture supervisor (%i)
After=bubblecam-rtc-sync.service local-fs.target
Wants=bubblecam-rtc-sync.service
# Rate limiting belongs in [Unit], not [Service] -- systemd ignores these
# keys entirely if they appear under [Service] (it logs "Unknown key"),
# which silently disables the restart cap.
StartLimitIntervalSec=300
StartLimitBurst=10

[Service]
Type=simple
ExecStart=/opt/bubblecam/bin/capture_supervisor.py %i
# The target /dev/videoN node may not exist yet at the moment this unit
# starts (USB enumeration timing on the OTG port is not instantaneous, and
# a generic template can't bind to a specific per-instance systemd device
# unit). Rather than a blind sleep, capture_supervisor.py lets ffmpeg fail
# fast if the device isn't there yet, and this unit just retries until it
# is -- self-correcting within a few seconds in practice.
Restart=on-failure
RestartSec=5
User=root
Nice=-5
IOSchedulingClass=best-effort
IOSchedulingPriority=2

[Install]
WantedBy=multi-user.target