Adding Avigilon Cameras to Omnilert Gun Detect

IMPORTANT: On the camera interface, under Compression and Image Rate, Format, Select "Dual."
https://help.avigilon.com/h3-webui/en-us/H3/WebUI/WebUI_CompressionImageRate.htm?Highlight=dual%20stream

Avigilon RSTP Stram URI:
https://help.avigilon.com/h3-webui/en-us/H3/WebUI/WebUI_ConfigRTSP.htm

Multi-sensor cameras:
https://support.avigilon.com/s/article/Examples-of-RTSP-Stream-URI-of-an-Avigilon-Multi-sensor-Camera?language=en_US

Omnilert Gun Detect Configuration:
Stream URI: /rtsp/defaultPrimary?streamType=u
Port: Blank