Hi,
Please tell us about your network(s). IP adresses, netmask, gateway.
Are you using DHCP?
What are the 4 cameras IPs? Are they in the same network IP space as your workstation/laptop?
Do you have a setup screen in the NVR similar to the one shown in pic below?
I was looking in the manual for Amcrest Network Video Recorder user manual ver. 1.0.3, revised Oct. 12 2018.
For the moment I will assume your amcrest NVR is similar.
Is your NVR capable of stand alone operation?
The NVR in the manual would appear to be so since it has USB connections(mouse,keyboard) and a VGA & HDMI port.
The NVR in the manual has a lan connection to plug into your existing lan to access it remotely(I'll assume it is connected to the same lan as your computer workstation). The IP can be static or from DHCP.
The NVR in the manual has a POE-switch section on the back where cameras are connected via cat 5e or 6.
There is also a setup screen for the POE switch portion of the NVR(see pic).
I summit that maybe this needs to be setup w/an unused IP in your existing lan. Netmask and gateway should match your existing lan. Then your cameras will be directed to your DHCP server to aquire an IP address on your existing lan. Then BI should be able to see the cameras.
I'll assume your NVR is using plug-n -play to assign IP to the cameras.
https://www.cctvcameraworld.com/how-to- ... ess-w-nvr/
I'll assume your cameras are set to aquire an IP from DHCP server(usually the default)
I don't know your network experience but just in case your just beginning this adventure, consider the following scenario:
Let's pretend your existing lan is: 192.168.0.0/24. (Netmask 255.255.255.0 is the same as the /24 suffix) and you are using DHCP.
You can use any address in the range 192.168.0.1 to 192.168.0.254
Then pretend you router/gateway is 192.168.0.1/24
Your workstation/laptop is 192.168.0.10/24
IPcam1 is 192.168.0.20/24
IPcam2 is 192.168.0.21/24
IPcam3 is 192.168.0.22/24
IPCam4 is 192.168.0.23/24
Leave NVR remote port as is for the moment.
The 'switch' portion of NVR could be static 192.168.0.2/24 or any currently unused IP address in that range.
Everything should be able to communicate in the above scenario.
At this point I will wait for your reply. Without specifics I'm just guessing (and maybe talking to much).
.