View source for GBF PL960PM IP Video Door Phone

A random user reports the following from the forums.[https://forums.zoneminder.com/viewtopic.php?f=10&t=26980]

===GBF PL960PM IP Video Door Phone===

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

===Notes===
<pre>
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
>
> 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.
</pre>