Security cameras are part of any good security system. And although any security camera can protect a place of business, not all cameras perform the same. The best solution for one company may not be the same for another. Therefore, before purchasing and installing or upgrading security camera equipment, understanding analog and IP is key
Analog vs IP
Today, many security camera systems incorporate both analog and digital. But the difference between analog and IP security cameras is how video footage moves from the camera to the video recorder.
Analog cameras capture video and transfer it directly to a DVR through a coaxial cable. Then, the DVR converts the video from analog to digital signals, compresses the file, and stores it on a hard drive. Traditional CCTV cameras commonly use analog cameras.
On the other hand, IP cameras transfer video digitally over a network and connect to a recorder using an ethernet cable via a network switch. Because each IP camera has its own IP address, the cameras can be found and streamed over the network. Modern security systems incorporate IP cameras.
Why choose Analog over IP?
Analog cameras are ideal for businesses with pre-existing coax cabling and are easy to set up. Although analog cameras are available up to 8mp resolution, 3-5mp is more common. However, analog cameras can cost less than IP cameras. Three main advantages of analog cameras include:
- Simple setup: Analog cameras plug directly into the DVR with coaxial cable and require less programming.
- Lower bandwidth: Because analog cameras transmit video files to the DVR over coaxial cable, transmission takes less bandwidth, putting less pressure on the network.
- Lower cost: Simple technology means analog security cameras cost less than similar IP security cameras.
Though analog cameras require less programming, they need more cabling for both the power supply and the DVR. As well, they have a maximum resolution, which impacts zooming. Analog also has limited throughput. Therefore, the higher the camera resolution, the lower the cameras can be used before compromising bandwidth. Overall, analog cameras are more suitable for smaller, simpler surveillance setups.
Why choose IP over Analog?
If simple surveillance is not enough, IP cameras are better because they offer resolutions up to 30 MP (7K). More options and features are available as technology advances, including multiple users and department access. Companies needing broader site coverage, like parking lots and construction sites, are ideal for IP cameras. Three main advantages of IP cameras include:
- Requires less wiring: IP cameras are simpler to setup. They connect to an existing network with one cable that provides power, video, and data. Therefore, there is no need to invest in new cabling. And with power over Ethernet (PoE), a power outlet close to the camera is no longer needed.
- Flexible and scalable: IP cameras offer more expansion options because their cabling requirements are less complicated.
- Better video quality: IP cameras are available in high resolution, up to 30 MP or 7K, yielding better quality video. Many models offer digital and optical zoom and provide more usable and meaningful footage.
However, IP cameras tend to cost more and require more bandwidth for video transfer over a network. Many advanced IP cameras have better compression technology and can help keep bandwidth low. Although throughout remains a concern, bandwidth can be managed with a custom-built server and a video management system (VMS). Because of the high resolution and frame rates IP cameras provide, a larger hard drive for storage is strongly recommended.
Video Capture: IP vs Analog
Analog cameras record onto a DVR, whereas IP cameras process and compress the video and then send it to a video recorder. However, IP cameras require a network video recorder (NVR) or VMS investment, whereas analog cameras need only a DVR. Though both analog and IP cameras face challenges with throughput, many advanced IP cameras have better compression technology, keeping bandwidth low.
Analog cameras are a good option for smaller surveillance systems of 5-16 cameras. Therefore, they are best suited for small retail stores, convenience stores, small businesses, or home security camera systems. On the other hand, IP cameras are better for more significant sites with more cameras, such as industrial businesses, construction sites, and large retail locations.
IP technology advances continue, leading to new features such as facial detection, video analytics, and appearance search. Meanwhile, analog cameras are stalling in their development and remain a less costly alternative. Some security equipment suppliers continue to provide analog and IP camera systems options, but with the prices on IP cameras dropping, analog cameras appear to be phasing out.
If a cloud-based video surveillance solution is of interest, then IP cameras are the better option. Analog cameras can plug right into an IP encoder, which will push them to the cloud. However, a real cloud-based video surveillance solution built from scratch would make more sense using IP cameras.
The Choice is Yours
Choosing between analog cameras and IP cameras depends on a business’s needs. If an analog system already exists, few cameras are needed, and budget is a concern, analog cameras may be the better option. But, if there is a need for higher image quality, an existing network infrastructure, and your budget allows for it, consider IP cameras. So before rushing to purchase the latest security cameras on the market, consider the differences between analog cameras and IP cameras and make the best decision for your business.
Want to learn more about security cameras and systems? Read our related posts, including the different security cameras, wireless security systems, and DVR, NVR and VMS recording systems. And if you have more questions, contact us for a FREE online design session. We will help you pick the right video surveillance system for your business.
Written by : Carlo Di Leo
At the age of 24, with no experience in the security industry or any money in the bank, Carlo quit his job and started Spotter Security from his parent's basement. Founded in 2004, Spotter grew from a single man operation into a multi-million dollar security system integrator that caters to businessess and construction sites across Canada.
