Differences Between DVR vs NVR Security Systems

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

 If you don't know the main differences between security DVR equipment and NVR security systems, then you could end up having the wrong surveillance camera setup. This is why you should know the ideal security camera system that can keep your residential and business premises safe and monitored at all times. Read on to learn what you need to know before you acquire a security camera system.


What Are Security DVR Systems?

Surveillance DVR (Digital Video Recorder) equipment is best for instances where you need to place your main data center in a fixed area that's also where your security cameras are positioned. This security camera setup is most effective for stationary systems that are in fixed positions and areas at all times.


Types of DVR Systems


There are two types of DVR systems. These are namely:


  1. PC-based DVRs - These are equipped with digital cameras that are configured to transmit video streams to a PC. Some have built-in audio input devices that can also transmit audio streams to a PC. The PC has a video card that is capable of recording the video streams and storing it in various digital formats. The software that comes with the video card and the DVR normally provides a set of tools for manipulating video stream transmission settings and data storage functions. This software may also come with video and audio editing applications that can be used to make some changes to the recorded video data; and


  1. Stand-alone DVRs - These are equipped with cameras that have its own operating system, a video recording device and video streaming capabilities. Some are also equipped with audio recording and streaming functions. This means all video and / or audio data is stored in the cameras themselves. Adjustments to certain audio, video, recording and streaming settings are also done in the cameras themselves.


Standard Hardware & Software Features of Security DVR Systems



Hardware and software features of security DVR systems vary from each manufacturer. These are some of the standard hardware features that are normally equipped into security DVR systems:


  • Form factor is designed for desktop and rack installations;
  • LED indicators and front panel switches for controlling the device's settings and configurations;
  • Single or multiple audio / video input ports for surveillance cameras, which are usually for optical fiber cables, twisted pair cables or coaxial cables;
  • Ports for audio / video output devices like display monitors and speaker systems;
  • Connection ports for keyboards, PTZ controllers, POS devices, mice and other pointing devices
  • Ports for network connections (usually cabled) and audio / video data streams;
  • Ports for audio / video output devices like display monitors;
  • Ports for external data storage devices like Flash disks and portable hard drives;
  • Internal hard disks and optical recorder drives; and
  • Alarm devices in external surveillance cameras and internal devices, usually configured for audio / video stream loss and motion detection.


Software features also vary from each system model and manufacturer. Here are the standard features of firmware and software tools that are usually integrated into these security DVR systems, and some of these are for bundled applications:


  • Input video display routing to display monitors based on manual configurations or automated processes like events and alarms;
  • IP and user logging, input video classification, date and time recording, event and alarm logging for specific input video devices;
  • User configuration panel for video frame rate and image resolution capturing, single or multiple audio recording channels and automated adjustments to frame rate, image resolution and audio channel recording based on specific alarms and events;
  • Hardware compression configuration panel for input video data; and
  • Motion detection tool with configuration panel for input video selection, motion sensitivity, input video direction and image area selection for each input video device.


What Are NVR Security Systems?



Surveillance NVR (Network Video Recorder systems are highly recommended for situations where you need to change the placement of security cameras time and again, or when you want to change output video display devices of any input video camera in the NVR security system from time to time. These NVR systems are also suitable for situations when you want to set up a main data center that's separate from the location where you want to place your surveillance cameras.


These NVR security systems can be configured to connect to the LAN (Local Area Network) where the IP cameras are also connected. The IP cameras in most of these security camera systems can be remotely configured and adjusted through a console that's installed in one or more of the connected computers in the same LAN.



Many of the standard hardware and software features in security DVR systems are also available in these NVR surveillance camera systems. Some manufacturers of these NVR security systems also provide mobile applications that can be used to remotely control the NVR system, as well as hardware device capabilities for streaming real time and recorded video data from one or multiple IP cameras in the same NVR on a supported mobile device or through the Web.




Now that you know the distinct advantages and disadvantages of security DVR systems and NVR security systems, you can make a more informed decision on which equipment to acquire for your residential and business premises. Check out our other guides for these security camera systems. Just post your questions in the comments below, so we can help you with your concerns.


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