Le 15 août 2016, 06:25 dans Humeurs • 0
A DVR Camera is a security system that connects one or more cameras to a digital video recorder. The biggest advantage is that it can take up too much longer periods without the need to change tapes. The technology also means it is possible to review footage immediately while continuing to record.
If you've ever seen a device like a TiVo ®, you will get a good idea how a DVR camera works. The input video is recorded on a hard drive instead of videotape. Instead of connecting a cable or satellite box to the DVR, hooks user only up one or more cameras and records feed.
Using a best dvr camera overcomes one of the greatest limitations of a tape-based recording system. Usually even the largest video-tape on the lowest speed will be limited to eight hours of recording. This means that it is impossible to use the system for long periods without being on hand to change cartridges.
It is much easier to run a multi-camera system with a DVR camera. With videotape, either a separate recorder for each monitor, or must use a split screen system which means that the image is recorded from each camera is smaller and therefore less detailed. A DVR can treat the entire display feeds from multiple cameras simultaneously.
Because a DVR camera records digitally, it is much easier to archive footage in case you need to refer back to them later, for example when giving evidence in a criminal investigation. The size and relatively low capacity of video cassettes involves a week of recordings can easily fill an entire shelf. Many users are thus forced to use tape and only retain a limited amount of recording. Recording from a DVR camera can be stored on DVD, which means a single portable 240-disc carrying case can contain records from two full years of recording. The plates are much more portable than tapes, meaning they can be moved off-site for extra security.
Another great benefit of a DVR camera system is that you can play and record simultaneously. With a cassette system you could not see the latest recordings, such as checking on a report of an attempted burglary, without either waiting until the tape was full, or replace cartridges. A DVR camera allows you to rewind and watch recordings from any point of a second since as far back as the hard drive recording covers.
There is also no guarantee benefits in the way a digital video recorder is powered by a computer. You can set a password so that someone steals the hard drive would be unable to see the film. Some models can also be connected to the Internet and set up so that if an alarm sounds, recorded the film just prior notification automatically e-mail to another computer as your home computer or to the police.