In addition to its function as a Video doorbell/intercom with your smartphone, this device provides two live video feeds.
On Wed, 7 Feb 2018, GBF Tech Support wrote:
> Here is the video URL info.
>
> The URL for the video stream is compatible with Dahua brand IP Cameras and uses the following URL format;
>
> For Main Stream: rtsp://{CAM_ADDR}:{CAM_RTSP_PORT}/cam/realmonitor?
> For Sub Stream: rtsp://{CAM_ADDR}:{CAM_RTSP_PORT}/cam/realmonitor?subtype=1
In Zoneminder I set up the Monitor/Source page as follows:
Remote Protocol: RTSP
Remote Method: RTP/Unicast
Remote Host Name: <local.LAN.IP.address>
Remote Host Port: 554
Remote Host Path: /cam/realmonitor?
Target colorspace: 24 bit Color
Capture Width (pixels): 1280
Capture Height (pixels):720
>
> Some notes about the video coding;
>
> - The ControlCam App uses the Substream. The coding for this stream must stay H.264 and cannot be switched to MJPEG as this will disable
> the video stream through our servers and the App will no longer connect to
> the IP Doorbell.
> - The Video coding settings ideally should be left at WAN defaults (activated when you press the WAN button in the Video Coding settings in the
> Web Browser interface). Improving the video quality of this stream
> will be detrimental to the smooth communication between the IP Doorbell and your mobile device.
I left the Substream at the WAN default, but changed the Main stream to the LAN default to get the better resolution above.