Homebridge Config

{
	"name": "Doorbell",
	"manufacturer": "2n",
	"model": "HeliosIP",
	"serialNumber": "1234",
	"doorbell": true,
	"videoConfig": {
		"source": "-i rtsp://IPaddress:554/h264_stream",
		"stillImageSource": "-i http://IPaddress/enu/camera640x480.jpg",
		"maxWidth": 640,
		"maxHeight": 480,
		"maxBitrate": 512,
		"forceMax": true,
		"audio": false
	}
}

Additional Information

Automation is required to enable the doorbell function:

Not sure "Enhanced Video License" is required for streaming video: