Digital video recorders are used to capture video from an analog security camera. A digital video recorder (DVR) gathers video from analog security cameras and converts them to digital format for storage and playback. They are considered the brains of a CCTV security camera system.
The DVR is the device that determines the final performance and quality of the recorded video that is produced by a CCTV security camera system. When selecting a DVR, several things should be considered. First, how many CCTV security cameras do you plan on having now and in the future? Second, what performance do you need or want? With DVRs, performance is measured by recorded resolution and FPS (frames per second). Third, you need to determine the amount of storage that you need. Storage needs can be hard to calculate as there are many variables, some of which, cannot be predicted. DVRs are advertised in many ways but two things remain important.
While most recorders have the ability to be viewed remotely, resolution and frame rate is most important when considering a DVR. Some manufacturers advertise a DVR at 30 frames per second (FPS). When looking at a recorder it is important to check what resolutions the DVR supports. High quality DVRs will record high frames and high resolution simultaneously. Low quality camera DVRs will record 30fps on each channel at low resolution (176x120 pixels) while high end DVRs record 30fps on each channel at high resolution (704x480 pixels). Successful identification of a person can depend on the resolution of recorded video.
Some recorders display video at high resolution and full frame rate but when played back lose the quality. A recorder at a truck might not need the same performance as one inside of a bank. A surveillance system used at a truck wash may just be used for overview purposes to let operators inside of an office know when the next truck can pull in. These systems require neither high definition nor high frames per second although some businesses prefer the added resolution and fluidity of the video. Banks and casinos on the other hand might have to have high performing DVRs by law.
Some states only admit video recorded above a certain resolution into court. This is why it is especially important to check a recorder’s specifications to make sure it meets the application’s requirements. At A1 Security Cameras we only offer professional high quality DVRs. Choosing the right DVR for your CCTV security camera system can at times be complicated. If you need assistance finding the perfect DVR for your needs then please give one of our Digital Video Recorder experts a call. We would be happy to assist you in finding the DVR that works best for your video surveillance system.