RVi Classifier.
RVi Classifier
Video recorders.
Classifier. For convenient and understandable differentiation of the RVi equipment lineswe offer a simple classifier. All names of digital video recorders begin with the English letter R after the brand name RVi. Also, the name of the video recorder model contains information about the number of video channels and its relation to a particular class, which is determined by its functionality and performance.
Model range of video recorders RViis clearly displayed on the diagram, where the main classification parameters are the generalized parameters of performance and functionality. We tie the performance parameter to the maximum resolution at which the device will provide recording at a speed of 25 frames per second on each channel. The functionality parameter is more general and generally reflects a set of consumer characteristics, one way or another, determining the cost of this device.
Following the principle from simple to complex, let's first turn to the RVi-R04SA video recorder. Its main properties include: the presence of a VGA output for the ability to connect a regular computer monitor, a total recording speed of 50 fps with an image size of 640 * 272, with the ability to randomly distribute across channels, MJPEG compression, and support for recording sound from one microphone. An IR remote control or a computer mouse can be used to control the video recorder. A backup copy of the archive can be saved on a flash drive connected via a USB port.
The following two models of video recorders are RVi-R04LA and RVi-R04LCsignificantly surpass the SA series model in terms of functionality. First of all, let's pay attention to their performance. The RVi-R04LA video recorder has a recording speed of 25 fps at a CIF resolution (352*288). When using the maximum frame size D1 (704*576), the recording speed for each channel is 6 fps. If, according to security requirements at the facility, it is necessary to record a video signal from one of the video cameras at a speed of 25 frames per second in full frames, then the RVi-R04LA video recorder will cope with this task, providing recording on the remaining channels with a resolution of 704*288 or 352*288. Unlike LA, the RVi-R04LC video recorderallows you to record full-frame video at a total speed of 100 fps and, importantly, play all 4 video channels simultaneously.
Along with the fact that these models are entry-level, they have a fairly wide range of functions, including network capabilities, thanks to which you can remotely view using a smartphone, as well as view images both in real time and archives via a local network. In addition, video recorders have an additional function for optimizing network performance, which allows you to back up the archive via a local network at a speed of up to 80 Mbit/s.
Now let's move on to the LB, MA and PA series of video recorders. The first obvious difference between these three series is the number of hard drives that can be installed for recording. One way or another, this parameter partly determines the scope of application of a particular video recorder. Video recorders of the MA and PA series have an interesting and important feature that allows you to increase the reliability of storing video archives. In cases where a hard drive failure should not affect the integrity of the video archive, you can use one or more hard drives to create a backup copy of the archive on them. In this case, recording will be carried out in parallel with recording the video archive on the main hard drives.
The performance of the LB and MA series DVRs generally follows the RVi-R04LA model with a slight difference. The 16-channel models of the LB and MA series DVRs have two dedicated channels, which can record full frames at a speed of 25 fps. The performance parameter is where the main difference of the PA series DVR lies. It allows recording on all channels at maximum speed with the maximum image size. This property explains the need to install more hard drives to ensure sufficient archive depth, compared to the LB and MA series. Installing 8 hard drives with a capacity of 2 TB each will allow you to record video continuously for about a month and a half at maximum image quality settings and a total speed of 400 fps. Thus, using a DVR such as RVi-R16PA saves you from the task of searching for a model that supports direct recording to external media and the external media themselves.
The difference in performance of the LB/MA and PA series is not only in the recording speed, but also in network capabilities. Thus, the LB and MA series video recorders allow you to broadcast not only the main video stream, which is identical to the one recorded on the hard drive, but also an additional network stream with a CIF image size and a speed of up to 6 fps. Having a higher performance, the RVi-R16PA video recorder is able to broadcast a video stream over the network with the same image size, but with a display speed of 25 fps for each channel. Using CIF resolution is quite justified when displaying all 16 video cameras on one screen of a remote workplace, since higher detail of the original image will be unnecessary when displaying all 16 video cameras on one monitor. In addition, using an additional network stream significantly reduces the load on the CPU of the PC of the remote workplace and, accordingly, on the local network. Moreover, for remote viewing via the Internet, an additional network stream is simply necessary. For remote connection to one or more video recorders, there is a remote client software RVi PSS.
The general characteristics of the above-mentioned video recorders are as follows: highly efficient H.264 video stream compression codec, audio recording support, high resolution of the recorded image — up to 528 TVL — the maximum theoretical value that can be achieved when recording in D1 format, the presence of three parallel video outputs (composite, VGA, HDMI), a large number of supported telemetry protocols, wide capabilities for processing alarm events.
Unlike the LB series, the MA and PA series video recorders have through outputs, an output for an alarm monitor, an eSATA interface for backing up large volumes of video data.
Recently, much attention has been paid to safety in public places, including transport. For such tasks, the RVi-R04L-Mobile solution is available in the range of video recorders. The system of protection of the hard drive from vibrations, standard dimensions of 1 DIN, the ability to record sound, superimposition of vehicle coordinates on the image make this device very attractive for medium and large fleets.
Video cameras.
An integral part of the video surveillance system is video cameras. The model range of RVi video cameras is divided by design types, and this classifier clearly displays the meaning of additional designations using the example of the professional outdoor video camera RVi-169SLR. Among the RVi video cameras, you can choose models for both indoor and outdoor installation in various designs.
Speaking about dome video cameras, first of all, let's turn to the economical line, which are based on 1/3″ CCD matrices and new generation Sharp processors. All these models use a lens with a fixed focal length of 3.6 mm, for ease of positioning, the cameras have three degrees of freedom. The RVi-E125 video camera is made in a plastic case and has built-in IR illumination.
The RVi-127 dome video camera is equipped with a varifocal lens with a wide range of focal lengths, the most popular among installers and designers 2.8 — 12 mm. Thanks to the SuperHAD II CCD matrix with high sensitivity and the modern Nextchip Hawk processing processor, the video camera provides high performance in such key parameters as the minimum illumination threshold and resolution. As a result, it is a universal version of a video camera for indoor installation.
The series of vandal-proof video cameras is represented by two models RVi-121 and RVi-123m of the traditional «ball in a glass» design with built-in IR diodes. The RVi-125 model is made as a fixed dome and has a varifocal lens, and also has the highest characteristics. At the same time, the RVi-123M differs from its competitors in the smallest dimensions. RVi-121is a traditional cost-effective solution with a resolution of 420 TV lines.
The RVi-65Magic outdoor video camera is a specific product in its class. As a rule, one of the important parameters for an outdoor video camera is the minimum illumination threshold. To improve this indicator, both standard and unique methods are implemented on the RVi-65Magic. The first thing that determines the minimum illumination threshold is the photosensitivity of the photodetector matrix. Starting this year, this video camera will be equipped with a high-resolution Sony SuperHADII matrix. The minimum illumination threshold can be reduced by using a frame accumulation algorithm. The RVi-65Magic video camera has 32-fold accumulation, which, in our opinion, is the most optimal, and in combination with the noise reduction system used, the blurring of moving objects is almost imperceptible. These methods of increasing sensitivity are widespread. But there is another way — to increase the amount of light that hits the CCD matrix. This can be achieved by increasing the relative aperture of the diaphragm and the light transmission coefficient of the lens. Both of these parameters on the RVi-65Magic have the highest values in their class, which ultimately allows you to get a color image at very low light levels. This model of the video camera comes with lenses with focal lengths of 4.3 and 8 mm.
As practice shows, a large share of outdoor video surveillance tasks are solved with a more cost-effective approach — these are outdoor video cameras with a fixed focal length and a small group of IR LEDs. Three such video cameras are presented under the RVi brand: RVi-161SsH, RVi-161HR, RVi-E165. The 161st SSH model with a resolution of 420 TVL, HR — 540 TVL and E165 — the most inexpensive outdoor video camera with a resolution of 540 TV lines, based on a modern Sharp matrix.
The next series of video cameras — the 160th is distinguished by the use of a varifocal lens for the ability to adjust the viewing angle directly during installation. Depending on the tasks to be solved, in the presented line you can choose models in both black and white and color, as well as medium and higher professional levels.
The 167 and 169 series video cameras are primarily designed to solve video surveillance problems in the absence of external lighting at long distances. The use of RVi-167 video cameras with a fixed focal length lens with careful design of the video surveillance system is more cost-effective, while the image quality remains high due to the Sony SuperHADII matrix and the HQ1 processing processor. These video cameras are ideal for video monitoring of extended perimeters and remote objects.
The 169th video cameras feature a newer processor that enables a wide range of functions and provides excellent image quality. These video cameras are equipped with varifocal lenses with a wide range of adjustment angles — as well as the ability to externally adjust the focal length and focus the image. With the ability to monitor with a fairly narrow viewing angle, the video cameras also provide illumination in the IR range of the object at a distance of up to 40 and 70 meters, respectively, for the RVi-169LR and RVi-16SLR
The 190 series of mini-cylinder CCTV cameras includes black and white models with high and standard resolution, as well as color high-resolution models with a fixed focal length and a varifocal lens.
The standard video cameras are presented by two models: RVi-345 and RVi-347. They differ mainly in the presence of a mechanical IR filter on the 347 camera, thanks to which this model can be classified as day/night. Both models use a SuperHADII CCD matrix. For more efficient operation of the RVi-347 video camera, external control of day/night switching is provided. The resolution of the 345th video camera reaches 540 TV lines. For the RVI-347 video camera, the resolution is 600 TV lines thanks to the Effio-E processing processor.
Despite the fact that prices for video surveillance equipment are steadily decreasing, there is always an opportunity to reduce equipment costs and at the same time create the appearance of a working system using dummy video cameras. Both RVi-F01 and F02 dummy cameras have a built-in motor and motion sensor.
Network cameras.
Network video surveillance equipment: network cameras, network video servers is a new direction for us. However, we are already ready to offer equipment on which you can build a complete small and medium-sized system.
The structure of IP camera designations is quite simple despite the apparent complexity. We place the main emphasis on the type of network camera and its resolution, of course, there will always be a number of additional designations, which we will not dwell on in detail for now.
The network cameras we offer are divided into four main types: standard, vandal-proof, high-speed dome, and fixed compact.
The so-called «budget» IP camera RVi-IPC11with a modification with WiFi will cope with the task of video surveillance at home or in the office, and the delivery set includes free software. RVi-IPC11 is capable of broadcasting video over the network in megapixel resolution at a speed of up to 12.5 fps or in VGA resolution (640 * 480) 25 fps.
Despite the fact that one of the most significant advantages of network video surveillance is the ability to use megapixel resolution, it is far from always justified, in particular, when it comes to video surveillance in low light conditions.
For applications where low-light performance is a priority, we offer models with D1 resolution. These models include the RVi-IPC20DN and RVi-IPC50DN36. Both models broadcast a video stream in H.264 format and support up to 4 independent video streams in total. The MJPEG stream is one of them. For optimal performance at night, these models have a mechanical IR filter.
In addition to the design type, the RVi-IPC20DN is distinguished by the ability to connect power using PoE technology. At the same time, the RVi-IPC50DN36, being a high-speed dome camera, is characterized by a high zoom factor — 36x, and the ability to be installed outdoors.
The line of fixed cameras with a resolution of 1.3 megapixels includes two models in the standard design RVi-IPC21, RVi-IPC21DN and one fixed dome vandal-proof RVi-IPC31DN. All these models support video broadcasting in 1280 * 720 format at a speed of 25 fps, while the camera can simultaneously broadcast video with a lower resolution. As a rule, the second stream is used to display the image on the screen, and the first for recording. These cameras can be powered via PoE. Support for the ONVIF protocol facilitates the integration of new network cameras into systems that already support this protocol. IP camera RVi-IPC21DN, as well as RVi-IPC31DN have a built-in mechanical IR filter, which is really necessary for a megapixel camera, due to its low sensitivity.