How would I combine CCTV and IP to record on same NVR (non hybrid)

[Bizentech]

Hey guys, I'm curious to know what my best option is to integrate my current HDCVI system with my IP expansion. Current system records Analog/Coax through Savant (so maybe each cam feed is on the network and has its own IP?) expansion will be 16 wired IP cams to an NVR. Can I get this analog cam feed to record onto my NVR? I want to use 1 application when viewing my cameras