bennett2843
You can use
Blue Iris to also feed from the IP Cameras while the Amcrest NVR and even a 3rd device all feed from the same Amcrest IP Camera (i am assuming is) simultaneously. The issue you may be facing is that since the IP Cameras are powered and network-switched by the Amcrest NVR, their IP addresses may be in a different subnet than that of your Blue Iris Host Computer. I am not 100% sure with the Amcrest NVR but i have seen this other NVR brands with built-in POE switch for IPCs also have a basic DHCP server that provides the IPCs with IP Addresses. This makes sense design-wise since it minimizes the networking complexity for their products to see each other.
Because of this, the NVR DHCP Server cannot provide IP Addresses that are in the same IP Subnet as your Blue Iris Computer UNLESS you also connect the BI Computer in the NVR, but I am also going to assume that that computer is not just used for BI so this is not a good solution. Long story short the BI Host computer will not see the IPCs on the local network and you cannot add them on the Blue Iris.
What you can try to do is, if you are confident enough to make changes on the Amcrest NVR, you can:
1. Set the IP Address of the Amcrest NVR to Static so you dont have to hunt for it later. This is just a recommendation so you can document but you can skip this part if you know how to look for the Amcrest NVR on the network later to load the Web Interface.
2. Disable the DHCP Server function of the Amcrest NVR.
3-A. Get an extra patch cord/network cable and connect it to your home wired network (where the NVR is already connected to) and to one of the empty IPC PoE ports in the back of the NVR. Or if you dont have any available wired ethernet ports available on your home network to connect to, you can (3-b)
3-B. Connect the NVR Network port (dedicated for internet connection and management only) into one of the empty IPC PoE Ports in the back, then connect another network cable from another one of the empty IPC PoE ports into your home wired network. This way you only need 1 network cable and ethernet port to be used in connecting the NVR into your home network.
Step 3 will only work if you make sure to disable the DHCP server function of the NVR. If you dont and then proceed with step 3 a or b, you will have issues on your home network as two DHCP Servers will exist at the same time on the same physical network. If you follow the steps properly, what will happen is your home network's DHCP Server will provide the IPCs with IP Addresses that are in the same IP Subnet as your Blue Iris Host computer and other devices on your home network. The NVR will provide the power to the IPCs via the PoE ports they are connected to on the NVR. You can then go back to the management panel of the NVR and re-add the IPCs if they are not already detected or recognized because of some IP address changes. Then on the Blue Iris server, you can add the IPCs if you already wrote down their IP addresses from what the NVR discovered. You can also use Advanced IP Scanner to find them on the network.
Worst thing that can happen is that you did not set up the network settings properly on the Amcrest NVR and you can just factory reset it to start all over again. Hope you get it to work!