Hey NhaTrang, I'm trying to do the same thing. Swann NVR died and replaced the NVR with HikVision. Regarding the IP address of the Swann IP camera, a few things I found today:
1. My Swann camera model is SRNHD-815CAM.
2. I plugged the Swann camera directly into the HikVision NVR to power it up...