Deciding Between an NVR Security System or DVR Security System

14/09/2015 0 Comment(s) Surveillance Equipment,

NVR security systems and DVR security systems are devices to manage, view and store surveillance videos. Available with a variety of software and hard drive sizes, NVRs and DVRs make it easy to save and review videos. Which one is needed and how it works will depend on having a CCTV or IP surveillance camera…


Features and Functions of NVR Security Systems



An NVR, also known as a network video recorder, is a type of virtual program that can record videos and clips in digital format, to be saved in a disk drive later on. Videos recorded using a NVR security system can also be stored in SD memory cards, USB flash drives, external hard disks – Or just about anything that can store huge quantities of files, pictures or videos.


NVRs usually do not contain any dedicated video capture hardware. This software is usually run inside a dedicated device, together with an embedded operating system. In order to increase the functionality and serviceability of NVR systems, the average Windows and Linux operating systems are used with standard processors from Intel, and some video management software. NVR systems are usually installed inside an IP video device.


Features and Functions of a DVR Security System



A digital video recorder, more popularly known as a DVR, is also referred to as a PVR, or a personal video recorder. It is a type of consumer electronic device that can record videos using various digital formats. Similar to an NVR, videos recorded with a DVR can also be saved in SD memory cards, SSDs, disk drives or USB flash drives.


A DVR security system includes set-top boxes (STB), which come with a direct-to-disk recording facility. Other things that come with the system include small media players.


TV gateways with both local and network recordings are also included because camcorders have the ability to record using Secure Digital memory cards and software for PCs and laptops. This allows video capture and playback of videos with a hard drive.


Different Types of Network Video Recorder Security Systems


  1. 4 Channel NVR System – This is an entry-type NVR built for homes, retail stores or small offices. The only thing to do is to insert the NVR inside a LAN-connected device (using a switch or a router). After a few clicks, it can configure and track down every connected IP camera without any additional work. This NVR can connect up to four IP cameras through the local area network, or just by using the Internet.


  1. 8 Channel NVR System – Just like the 4-channel NVR, this system works well with eight IP cameras. No hardware or software is also needed – Just plug in the NVR into the LAN-connected device, and it will configure all eight cameras right away.


  1. 16 Channel NVR System – For those who own large houses or work in a big office space, more cameras and a larger NVR are sometimes needed. 16-channel NVRs work just as similarly as the aforementioned 4-channel and 8-channel NVRs. The only thing needed here is a larger disk space or storage device for the recorded videos.


Network Video Recorder Security System vs. Digital Video Recorder Security System


Both DVRs and NVRs do the same task of keeping, saving, and recording surveillance videos. However, these two still hold a couple of differences – For one, they were made to work with different cameras. Both DVRs and NVRs come in different form factors – As a stand-alone appliance, a rackmount server, or a tower server.


DVRs are used in CCTV cameras, or surveillance and analog systems. Older DVRs once recorded videos straight to tapes with a VCR. Nowadays, the current systems utilize DVRs to transform video files into digital format, letting people record and store more videos. DVRs also provide the convenience of giving people remote access to videos, which are commonly found in newer IP cameras and NVRs.


The difference between an NVR and a DVR is that an NVR system’s input comes from a network, instead of a one-way connection to a tuner or a video capture card. Videos on a DVR are usually processed and encoded inside the DVR, while the ones recorded in an NVR are processed and encoded in the camera itself. Afterwards, they are streamed to the NVR to be viewed or stored by the user.


Contrary to DVRs, NVRs aren’t limited to work in a similar area where the cameras are all connected to one section. NVRs can be placed anywhere – As long as it has the same LAN network as the IP-based cameras.


Aside from this, NVRs are also used in most IP video surveillance systems. Because of these units, cameras that have the ability to capture high-resolution pictures and videos as well as record and view this data in the user’s resolution of choice, as compared to a DVR system.


Now that almost all the best features and functions, as well as the advantages of one system from the other, have already been presented here, it is up to you to make the final choice. Whether you opt for a NVR Security system or a DVR security system, protection and system stability should be your utmost concerns.



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