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This topic describes what to consider for when purchasing a video surveillance system for your Business:
Surveillance System Advantages
IP Cameras vs. Analog Cameras
Resolution
Video Analytics
Network Video Recorders
Comparable System Cost
Resolution
Frame rate:
Models
Indoor/outdoor:
Lighting
Audio
The Video Recorder
Storage capacity
Cloud storage
Camera compatibility
Compression
PoE Switches
Elements
Installation
Pricing
Type of Camera
Type of Storage
Digital Video Recorders vs. Network Video Recorders
Resolution of Recordings
Camera Connections
Hybrid Video Recorders
What to Consider for When Purchasing a Video Surveillance System for Your Business:

Any firm must prioritize security. After all, how can you be successful if you can't safeguard your assets? Video surveillance systems have never been more intelligent or effective. Motion sensors and automatic mobile notifications are just a few of the computer-like capabilities and capabilities that are now available on cameras. Some systems will immediately contact law enforcement.
Technological advancements have also resulted in more efficient recording and storing methods. Small business owners have access to quite powerful surveillance equipment at quite low costs.
Most vendors offer a high level of customization, allowing you to build a system to your company's exact requirements. There's a solution for everyone, whether you require a large system that can cover numerous sites or only a few cameras to keep an eye on your storefront.
Video surveillance helps safeguard your business from theft, infiltration, fire, flood, and burglary.
Think about the sorts of cameras you want, the sort of storage you require, and the regions of your organization that need to be protected before evaluating solutions.
Internet protocol (IP) and analog cameras are the two most common types of security cameras.
Surveillance System Advantages
Surveillance cameras can not only discourage criminals and assist law enforcement in promptly apprehending would-be thieves, but they may also increase employee responsibility, help you track production, and maybe lower your insurance prices. While the initial price of installing a video surveillance system may appear high, the long-term benefits and peace of mind may be well worth it.
IP Cameras vs. Analog Cameras
IP cameras and classic analog cameras are the two types of cameras that can be wired into a video surveillance system. IP cameras are the more current version of analog cameras, and while they are more expensive per camera, they have many functions that analog cameras do not.
The differences between the two types of cameras are outlined below.
Resolution
IP cameras are more powerful than analog cameras, and they typically shoot footage with a resolution of 1 to 5 megapixels. This results in a crystal-clear image, especially when compared to the grainier analog footage, which is only half a megapixel. In addition, IP cameras have a wider field of view than analog cameras.
Video Analytics
Analog cameras do not have additional functionality that IP cameras do. Video analytics is an example of this, as it allows for mobile notifications and automatic recording when movement is detected within the camera's range of vision. This is especially beneficial when your business is closed and you want to know if somebody is moving around within the building. You can set the system to mark incidents like this and receive notifications and video footage of the occurrence directly to your smartphone. A direct, one-touch link to local law enforcement is also available in some systems.
Network Video Recorders
IP cameras work with NVRs, which have a number of advantages over previous digital video recorders, which we'll go over in more depth below. In a nutshell, NVR records higher-quality video and allows systems to scale up considerably more readily than DVR permits.
Comparable System Cost
While IP cameras are often more expensive than analog cameras, the total cost of an IP system is often less than that of an analog system. An IP system can frequently work with fewer cameras than an analog system because IP cameras have a greater field of vision.
When selecting a system camera, there are several things to consider.
Resolution:
When choosing a camera, this is one of the most crucial factors to consider. A camera that shoots at least in 720p high definition, which means an IP camera, is required for sharp photos. You don't want to cut corners here if you want to ensure that your camera produces a clear, recognized image.
Frame rate:
Another important feature of a camera is its frame rate: the higher the frame rate, the smoother the video. A motion picture is made up of a succession of still images patched together. The lower the frame rate, the fewer stills are captured, resulting in choppy footage. You should think about the frame rate. To give you a sense of scale, real time is usually measured in frames per second.
Models:
There are numerous types of security cameras available. Bullet cameras, which are rectangular boxes that protrude from a wall; dome cameras, which are commonly affixed to a ceiling and contained in a tinted cover; and PTZ cameras, which allow remote-control capabilities to modify the field of vision, are some of the most frequent types. Consider which sorts of cameras will offer you with the quality of footage you want with your system, depending on your security needs and where you plan to set the cameras.
Indoor/outdoor:
Some security cameras are made specifically for the indoors and won't stand up to Mother Nature quite as well as their outdoor counterparts. If you plan to use cameras outside, make sure you purchase weatherproof models. Otherwise, water or dirt interferes with the clarity of your video feeds or, worse, causes the camera to malfunction. Look into the level of protection from natural conditions your security camera offers.
Lighting:
Many security cameras shoot in low-light infrared, which allows them to catch clear footage in low-light situations. The more infrared LEDs a camera has, the better it can shoot sharp, clear video at night. If you want to capture film in the dark, make sure your camera includes a lot of IR LEDs.
Audio:
Some cameras don't pick up audio at all, while others do. Some even enable two-way audio, so a person watching the camera on the other end can communicate with a subject in the camera's field of vision.
The Video Recorder
Storage capacity:
Storage is an important factor to consider when purchasing a video recorder. The amount of storage you need depends on the number of cameras in your system, the resolution of each camera, the amount of archived material you want to maintain, and how long you want to keep recorded footage. If numerous cameras film at a higher resolution, the footage will soon fill up your hard drive. When you reach the system's capacity, you can set a video recorder to replace the oldest material, but if you're not careful, the system may overwrite stored footage that you still need. There are online calculators that can help you figure out how much storage space you'll need based on your system's specifications. According to the Super circuits calculator, a four-camera system running 24 hours a day employing IP cameras with a 2-megapixel resolution and a frame rate of 5 fps, with video compressed into MPEG, MP4 files on an NVR, would require 2.79 terabytes of storage space for footage. For a fairly sized system, that's a lot of data, so make sure you plan ahead and figure out how much capacity you'll truly need. You'll also want to leave some room above that calculated amount to save any really intriguing footage you might need to refer to later.
Cloud storage:
In addition to your video recorder, you can store recorded video in the cloud. There are several advantages to doing so, including remote access to your videos and increased storage capacity. However, you must do so in a way that does not consume all of the available bandwidth and slow down your network. The best approach to achieve this is to upload files to the cloud on a schedule or after business hours. Furthermore, many cloud services charge a monthly fee to use their services, particularly for long-term storage of video files. Inquire about the company's cybersecurity procedures to guarantee your data is safe.
Camera compatibility:
Not every camera is compatible with every video recorder. Although analog cameras are required by DVRs and IP cameras are required by NVRs, the compatibility issue extends much beyond that divide. Some NVR systems, for example, are only compatible with IP cameras from a select few manufacturers. If you're buying a video recorder, make sure it'll work with the cameras you've bought. The cameras should be able to tell you the necessary information if you're working with a surveillance system integrator to configure your system.
Compression:
Compression reduces the amount of data delivered to your video recorder, allowing you to save space. MPEG and H.264 are two of the most popular high-definition video compression algorithms. You can also use MPEG4, however the quality is generally lower than that of MPEG4's predecessors. Compression methods are complicated, and their applications vary based on your requirements and hardware. A helpful primer on compression technologies has been created by Security Info Watch.
PoE Switches
Power-over-Ethernet switches are only applicable to NVR systems; however, they eliminate other components that would be required for a DVR system, such as extra power sources and BNC cables for connecting cameras to the DVR. When you attach a PoE switch to your network, you get a power source as well as a way to send data to your NVR in one package. When deciding which sort of PoE switch to purchase, the number of cameras on your system is the most important factor to consider. The second factor to evaluate is how likely you are to expand in the future.
There are also wireless IP cameras available that require little more than mounting, but those might be less secure than wired connections. If you choose wireless, you'll need to make sure the signal can't be easily intercepted. Again, it all comes back to your particular needs and the type of system you're trying to construct.
Wireless IP cameras that require no more than mounting are also available, however they may be less secure than wired connections. If you go with wireless, be sure the signal cannot be easily intercepted. It all boils down to your specific requirements and the type of system you're attempting to build.
Elements
Before settling on a video surveillance system for your business, you need think about a few things. These are some of them:
Installation
You can install it yourself if your organization is tiny and you don't have many areas to monitor or multiple cameras to put up. Professional installation is recommended for larger enterprises with several sites and intricate installations.
Pricing
Pricing is also determined by the size of your company and the number of cameras you need, as well as the type of storage you want, the length of time you want to keep video, and the features you want, such as video analytics or motion detection. Video surveillance systems typically cost between $100 to $10,000 per month for simple one or two-camera systems and $5,000 for complex systems with several cameras.
Type of Camera
Internet protocol (IP) and analog cameras are the two most common types of cameras used in video surveillance systems. Traditionally, analog cameras have been utilized. IP cameras, which have more features and capabilities than analog cameras, are gradually being phased out. IP cameras are networked devices that can capture higher-resolution images and provide features such as automatic warnings, video analytics, and more.
Night vision, sophisticated motion detection, and pan/tilt/zoom are just a few of the capabilities offered from video surveillance systems (PTZ). Assess the features your company need and choose your surveillance cameras and system accordingly. For example, if you want to monitor your business at night, you'll want a system with powerful night vision and 24-hour notifications.
Type of Storage
Your video surveillance system can use one of three forms of video data storage: NVR, DVR, or hybrid. DVR stands for a digital video recorder, and analog cameras are used in these systems. The term "network video recorder" refers to a device that records video from IP cameras. You can use hybrid systems to integrate analog and IP cameras.

Digital Video Recorders vs. Network Video Recorders
To transmit and store the footage captured by all security cameras in a system, a central video recorder is required. DVRs are the successors to earlier VCR types, whereas NVRs are the next step in video recording technology.
A side-by-side comparison of DVRs and NVRs is shown below.
Resolution of Recordings
DVRs often support D1 resolution, which is the standard video quality used in closed-circuit television systems. D1 corresponds to a 720 × 480-pixel resolution, which is considered standard.
NVRs, on the other hand, can record in 1080p, 4k, or high definition. In comparison to a DVR system, NVRs provide significantly better video quality. For the purposes of comparison, 1080p refers to a resolution of 1920 × 1080 pixels. As a result, the image is significantly clearer.
Camera Connections
A BNC cable from the DVR is plugged into the camera to connect analog cameras to a DVR system. Additional wires are required to connect more cameras to the DVR system. DVR systems are difficult to scale up since once each BNC connection is filled by a camera, you must buy a new DVR before adding another camera. DVRs also demand that the cameras attached to the recorder be close to the recorder; otherwise, video quality suffers..
Because it is directly connected to a network, the NVR eliminates these issues. IP cameras that are linked to the same network, typically via a PoE switch, can then provide video to the NVR. Because they can accept a new camera once it is introduced to the network, systems based on an NVR are considerably easier to scale up than DVR systems. In the worst-case scenario, only an additional PoE switch would be necessary.
Some IP cameras are also wireless, allowing footage to be transmitted to the NVR through Wi-Fi. As long as a camera is connected to the same network as the NVR, there are no distance restrictions. The most significant disadvantage of an NVR system is that not every IP camera is compatible with every NVR. As a result, you should double-check that your cameras are compatible with a certain video recorder before purchasing them.
Hybrid Video Recorders
HVRs (hybrid video recorders) are video surveillance systems that can handle both IP and analog cameras. HVR systems are desired because of their versatility; for example, if you're upgrading an old system and don't want to get rid of your old analog cameras, an HVR can assist you make the transition and prepare for a totally IP system in the future.

Reference:
https://umbrellatech.co/cameras-for-business-security-and-key-facts-of-video-surveillance-systems/
https://www.freepik.com/premium-vector/home-security-camera-video-surveillance-systems-infographics-illustration_11693208.htm
https://www.axis.com/blog/secure-insights/security-surveillance-needs/



