In this blog you you will know about Difference between Analog vs IP CCTV Cameras .But before I will little explain you about analog and IP Cameras.
Analog cameras
In a traditional analog CCTV application, a security camera captures an analog video signal and transfers it over a coax cable to a digital video recorder (DVR). Each camera can be powered by plugging the power supply directly into the camera or by using the RG59 turn signal cable which combines the video cable and the power cable together. The DVR converts the analog signal to digital, compresses it, and then stores it on the hard drive for later retrieval. Intelligence is built into the DVR to handle things like scheduling, motion detection, and digital zoom.
The monitor for viewing video is connected to the DVR or it can be configured to publish to the local network for viewing on a PC. The DVR can also be configured to stream over the Internet and can add password protection and other features. When streaming over the Internet, video from all cameras is transmitted as a single stream (one IP address).
IP Cameras
In the IP world, each network camera captures an analog image but immediately converts it to digital form inside the camera. Some digital processing can happen directly on the camera, such as compression and motion detection. The digital video stream is then broadcast over the local area network (LAN) using an Ethernet cable (CAT5 or CAT6). Power is supplied to the camera via an Ethernet cable via the Power-Over-Ethernet (POE) adapter built into the camera and the switch (POE on).
FYI – Older model IP cameras don’t have a built-in POE, so POE adapters must be added to a system like this.) The Ethernet cable from each camera is plugged into the switch that powers the central network. As with all network devices, configuration must be performed for each network camera to configure its IP address and other identifying attributes.
A network video recorder (NVR) performs the same function as its DVR cousin in the analog world. It captures the signal from each camera, compresses and saves it. The main difference is that the video streams are digital (and of much higher resolution) rather than analog. NVR built-in software provides features like smart search and zoom etc. The NVR combines video feeds from the camera and manages the local network and internet streaming for local and remote viewing.
Difference between Analog vs IP CCTV Cameras
Video quality
IP cameras offer better overall video quality than analog cameras. They offer more range of video sites, such as wide or narrow field of view and better zooming capabilities. And because they transmit true digital signals, they provide much more detailed video, making them much better for facial recognition or license plate detection.
Analog cameras have lower overall quality than IP cameras, but perform better in low light. Analog cameras have more limited site coverage and lack the clarity when zoomed in like IP cameras. If you enlarge the analog images, you will get grainy images and loss of quality. It’s not like what you see on TV detective shows. If you are using an analog camera, you will not recognize the faces of the authors when zoomed in.
Resolution
Typically, digital cameras offer 6 to 20 times higher resolution than analog cameras.
Analog cameras are limited to NTSC/PAL standard resolutions of 720 x 480 pixels (NTSC) / 575 (PAL) or 0.4 megapixels ( (4CIF). Analogue camera resolutions range zoom 420 to 700; which at the high end can produce sharp images.
IP cameras offer resolutions from 1.3 megapixels to 5 megapixels (2560 x 1920) compression and encoding transmission. This gives you the ability to cover a much wider viewing area or get much more detailed images in narrow viewing areas when zoomed in.
Transmission Media
its also difference between Analog vs IP CCTV .Traditional analog cameras operate over coax cable. They can also work over twisted pair cable or with a wireless connection, but this results in a lower resolution. IP cameras also work on wireless, coaxial and twisted pair connections.
PoE Capability
One of the advantages of IP cameras is that they can be powered over a twisted pair Ethernet cable, eliminating the complexity of wiring. Old analog cameras cannot be powered by PoE.
Wireless
The wireless IP camera network connection can be a very practical solution in areas where it is too difficult or expensive to run cables. Wireless can also be used in buildings where it is impractical or impossible to run cables, such as in historic buildings.
Distance
Analog cameras can send video over twisted pair cable up to 1.5 miles and up to 300 meters over coax. But analog signal transmission loses clarity as distances increase and as the signal is converted from one format to another.
IP cameras can send 100 meters digital video over twisted pair Ethernet cable and unlimited distance over IP network. Because the images are digital, they retain 100% of their clarity over long distances and when the signal is converted between different formats.
Reliability
Analog cameras have been around for more than half a century and have a long history of reliability.
IP systems have built-in reliability through encryption and data compression. They are just as reliable as the network, although redundancy systems can be put in place to mitigate power outages.
Cost
Main difference between Analog vs IP CCTV is their cost.
IP camera systems are considered more expensive because the cost of the cameras is higher than that of analog cameras, although the prices of IP cameras continue to fall. But overall costs may be lower than expected due to lower cost of cabling, recording equipment and labor costs.
It is also possible to reduce costs by installing IP cameras with existing cabling infrastructure through the use of extenders and media converters.
