SURVEILLANCE
Still running analog DVR-based cameras? Here is a complete, practical comparison of IP and analog CCTV systems to help you decide what makes sense for your next surveillance upgrade.
Surveillance technology has changed dramatically over the past decade, but a large number of businesses in India still operate analog CCTV systems connected to DVRs over coaxial cable. With IP camera prices now competitive with analog, and with growing demand for remote monitoring and smart analytics, many businesses are evaluating whether to upgrade. Here is a complete comparison.
Analog cameras capture video and transmit it as an analog signal over coaxial cable to a Digital Video Recorder (DVR), which converts the signal to digital for storage and playback. Power is typically supplied separately to each camera.
IP cameras digitise video at the camera itself and transmit it over a standard Ethernet network to a Network Video Recorder (NVR) or directly to cloud/local storage. Power and data are usually delivered together over a single Cat6 cable using Power over Ethernet (PoE).
This is where the gap is widest. Analog systems (even HD-analog/TVI/CVI variants) typically max out around 2-5MP resolution. IP cameras commonly start at 4MP and go up to 8K, with significantly better detail for identifying faces, number plates, and small objects — critical for incident investigation.
Analog systems require separate power cabling and coaxial video cabling to each camera. IP systems run on a single Cat6 cable carrying both power (via PoE switches) and data, which simplifies installation, especially in retrofits where running multiple cable types is impractical.
Adding cameras to an analog DVR system is limited by the number of physical input channels on the DVR — once it is full, you need a new DVR. IP systems scale by adding cameras to the network and expanding NVR storage or using distributed recording, making phased expansion much easier.
Modern IP cameras commonly include onboard analytics: line-crossing alerts, intrusion detection in defined zones, vehicle and person classification, and even license plate recognition on supported models. These features are rare or absent on analog systems and typically require expensive add-on hardware to replicate.
Both analog DVRs and IP NVRs typically offer mobile apps for remote viewing, but IP systems generally offer more flexible options for cloud backup, multi-site monitoring from a single dashboard, and integration with access control and other security systems.
Entry-level analog cameras remain slightly cheaper per unit than entry-level IP cameras, but the gap has narrowed significantly. When you factor in simplified cabling (single cable vs. two), better image quality at the same price point, and built-in analytics, IP systems often work out to similar or better value — especially for new installations rather than small additions to an existing analog system.
If you have a small, working analog system and only need to add one or two cameras, extending the existing setup may be the pragmatic choice. But for any new installation, a significant expansion, or a site where image quality and remote monitoring matter — retail stores, banks, warehouses, hospitals — IP CCTV is now the clear standard, and the one we recommend and deploy for the vast majority of our clients.