circular male/female push fit connectors
You hav shown the connector to the dvr, the broken cable is between the red connector and the camera
As the calbe leaves the camera there are two separate wires both covered in black insulation, about 20cm from the camera, these pass into a smallplastic moulding and appear to become a single feed with a black insulation, the other end (near the DVR) the single cable passes through another sealed moulding and then emerges as two wires one has the red push fit adaptor fitted, and the other goes to the yellow pushfit which connects to the DVR. the whole thing appears as a single entity although made up of several bits fixed in plastic mouldings.
The cable is broken where it appears as a single cable.The red apator appears coaxial.