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When you decide to get a security surveillance system, especially for your automobiles, you have to pick either a DVR or NVR system. The two types perform the same function, but they differ in how they work and the kind of cameras they use. The systems can record and allow the fleet managers to monitor the activities of the drivers, and to see the happenings around the vehicles when parked on a street or elsewhere. Also, the interested parties can see what is happening in the vehicle and record footage that can be used in legal cases. Security surveillance systems are a worthy investment, and fleet managers should consider having them in their vehicles.
It is vital to understand the difference between a DVR and an NVR system to be able to make an informed decision. Here we go.
The basic differences between DVR and NVR systems
DVR is an abbreviation for digital video recorder, while NVR stands for Network Video Recorder, and both perform the same function of video recording. However, the main difference is how they both work. While DVR systems record the video data at the recorder, NVR systems perform the encoding and recording at the camera and then stream the video to the NVR recorder, which stores and enables remote viewing.
Type of camera used
The difference in the handling of data between the two systems means they both require different kinds of cameras. DVR systems are used with analogue cameras (CCTV cameras), whereas NVR systems are used with internet protocol (IP) cameras—cameras that receive, control, and send image data through the Internet. IP cameras need a local network, but not a local recorder. The type of camera used also dictates whether there is a need for wiring or not—DVR systems require wiring while NVR systems can be wired or wireless.
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The flexibility of the systems
DVR systems require cables—coaxial BNC cables—as each camera requires a power supply, a cable to connect it to the recorder, and, if audio data is needed, a cable for the same. This makes the system a bit inflexible. It can only integrate wired cameras, and the mounting options may have limitations, especially in tricky areas/tight situations, as the system needs cabling and a power supply. Also, the recorder has limited audio ports, so only a small number of cameras can take audio data, meaning this will necessitate special cables.
NVR systems are very flexible, as they can accommodate both wired and wireless security cameras. Even where they use cables, NVR systems utilize Ethernet cables—one of which helps to capture video—audio data, and supply power to the camera, thus avoiding the messy splitters in the DVR system. The NVR system allows cameras to go in tight places, as they can be set up without cabling. Additionally, with only the need to have a camera connected to a network, and not physically to a recorder, you can have all cameras connected to the same network, so you can view them as an all-inclusive system.
Both systems are reliable in recording video data, but they differ in their functioning. DVR systems tend to give lower quality images, but the quality has greatly improved with technological advancements. The winning point for DVR systems is that they are cheaper due to the nature of the cameras and cables they use, among other things. They suffice for a basic security system. On the other hand, NVR systems are top for their flexibility, quality of images, and excellent audio data collection and delivery.