The availability of DVRs in stores is impressive. Choosing the right registrar doesn't mean buying the most expensive one. In most cases, there is little difference in functionality. Therefore, it is much more important to acquire a useful technique and try to take into account all the points that may be important. After all, who knows what exactly your DVR can record at a certain point in time and how much it can help you or other people.
Do you need to record, play back, save something and provide the ability to transfer data to video surveillance archives?
All this can be done using one independent device - a video recorder. It is the simultaneous presence of a large number of various functions that made video recorders one of the most popular devices from video surveillance systems.
Various features and characteristics make it possible today to distinguish between different types of DVRs with their inherent advantages of an individual nature.
Functionality and conditions of subsequent operation - this is what underlies the selection of the required device. It is not surprising that before making a purchase, it is necessary to study in detail the entire offered assortment of the required product.
Directions of DVRs
For the convenience of analysis, all DVRs can be divided into two directions:
- Stand Alone DVR
- PC-based DVR
The first type of DVR is distinguished by significant advantages, they are convenient in operation, reliable and compact. Before making a choice of one or another device, carefully read the parameters and characteristics, the main of which is video inputs:
- for 32 channels;
- for 16 channels;
- for 8 channels;
- 4 channels.
It all depends on how many cameras you plan to connect.
The second direction of the video recorder is a video capture card, which is installed on a personal computer with appropriate drivers. The advantage of this product:
- ease of setup;
- the ability to scale.
As a relative disadvantage, a certain difficulty in the installation can be noted. Only a trained person can cope independently. There is another option - you can always buy a ready-made video surveillance kit.
Important: when choosing a device, you must take into account which audio inputs will be used in order to ensure the synchronization of sound recording and the picture format, as well as the monitor on which you will view the future image.
Main video formats supported by DVRs: MJPEG, Wavelet, JPEG-2000, MG-4PE, H.264.
For the best image quality, you need to take into account the picture resolution parameters: 720x574; 528x382; 360x286; 360x284.
The quality of the picture depends on the number of resolution points: the more this indicator, the better.
An important parameter, the recording speed indicator is designated by the FPS marking and determines the number of frames that can be recorded in one second. The European maximum standard is 25fps.
Additional features when choosing a DVR
First of all, this is the presence of: auxiliary ports that allow you to connect various additional devices, USB ports, network capabilities, type of DDV drive.
The parameters that determine the convenience and ease of use of the DVR are the ability to loop recording, date and time on video, built-in display, and the ability to view video.
By choosing the right DVR, you will receive undeniable advantages, such as:
- The ability to record using several modes.
- Get extremely good quality images.
- Have the ability to back up to any removable media or to remote servers on the Internet.
- The ability to transfer the necessary data to law enforcement and other authorities using a simplified scheme.
- You can remotely view any archives of your DVR video recordings via local networks or the Internet.
Study carefully all the characteristics in the complex, compare them with the price, assess your financial capabilities and purchase a much-needed device.
