H.265+ supports resolutions up to 8192x4320, including 8K resolution and has a 50% storage reduction compared to H.264
Power over Ethernet (PoE) allows power to be delivered via the Ethernet cable, removing the requirement for dedicated power supplies. Many NVRs & Network Switches support PoE allowing these devices to deliver power to PoE capable IP cameras via the network infrastructure itself
Smart features can include:
Region Entry/Exit - Region Entry/Exit detects people, vehicles or other objects entering or exiting from a per-defined virtual region, triggering an alarm which may also generate further actions.
Target Cropping and ANPR (automatic number plate recognition)