When resetting the camera, the setup wizard asks if the camera is set to NVR or Standalone mode. If standalone mode is selected the setting is not stored and the camera is operating in the NVR-mode. This can not be changed from the web UI after the initial setup. This is how I managed to get the camera to standalone mode.
- Connect to the camera via SSH
- Edit configuration file /tmp/system.cfg and change parameter device.managed_mode from 1 to 0
- Save file
- Apply settings with command
$cfgmtd -f /tmp/system.cfg -w