The DVR is a modern compact video recorder. Most often, DVRs are purchased for cars. If the first registrars were a luxury or a toy, today this device is more a necessity. Most drivers have already appreciated the positive qualities of this element of the car. The presence of such a device in the machine will always help to avoid controversial situations that often arise on the road. The recorder will record and store information about trips. In the event of an accident, disputes with representatives of the traffic police, pedestrians with such a device, finding the culprit will be straightforward and the true cause of the violation to be determined and proven. As to the choice of any home appliances, the purchase of a DVR for a car needs to be approached in a comprehensive manner.
Contents:
- The best manufacturers of DVRs
- The principle of operation and the device of the DVR
- Types of DVRs and their function
- DVR selection parameters
- Which DVR to choose
- The cost of DVRs
The best manufacturers of DVRs - which company to choose
Specially for those readers who do not want to master the topic entirely, but you need to quickly acquire a DVR without taking into account the main characteristics, the best products are selectedappliances.
These manufacturing companies are:
1. Mio MiVue
2. StreetStorm
3. Datakam
4. BlackVue
For a more detailed study of the best DVRs of advertised brands, you can view the rating of the best DVRs. Lovers of domestic products are encouraged to pay attention to the reliable Russian brand Texet.
Principle of operation and the device of the DVR
The DVR is a device for accumulating information, which performs the video recording of what is happening in the established perspective during the operation.
The device itself is a construction of the following main components:
- monitor;
- processor;
- battery;
- camera;
- memory card;
- housing;
- mounting.
DVRs on buildings can be included both independently and automate this process. Automobile varieties start to work automatically when the ignition is switched on. Immediately begins to go shooting of everything that falls into the field of view of the camera, recorded during the trip and stored on a memory card.
Modern technology is designed in such a way that any record from it can be viewed at any convenient moment. This can be done on the recorder itself or to remove the USB flash drive and view the recordings on a computer, laptop or even a smartphone.
The principle of operation is built on the following stages:
- camera performs video shooting depending on the specified time intervals;
- signal is transmitted via cable to the DVR;
- device processes the incoming signal, taking into account the duration of video recording, the date and time of creation;
- special codec is engaged in compression of the received data and transfers it to the built-in or external memory.
Varieties of DVRs differ in the ability to connect up to 8 analog or IP-cameras, as well as a microphone.
Types of DVRs and their function
All video recorders can be divided into two groups: mobile and stationary.
Stationary DVRs
Stationary - these are the types whose operation depends on third-party devices.
There are 3 groups of fixed DVRs:
1. Network
The principle of operation of such devices is based on the capture of the signal from the IP camera, the archiving of data and their storage.
2. Hybrid devices
Compatible with both IP cameras and analog cameras.
3. Based on PC
Multitasking devices that use computer power in their work.
Advantages of the group:
- the possibility of application in video surveillance systems of absolutely any buildings: private houses, offices, public buildings and institutions for security purposes, in customer service areas;
- power processors - and therefore high quality recording.
Cons of the group:
- high cost;
- hiring specialists for installation.
Mobile DVR
The group of mobile DVRs are automotive models. They are often used to record, record and store traffic information from absolutely any vehicles, including boats, yachts.
Pros:
- easy installation;
- large assortment, both in the functional and in the price range;
- affordable cost;
- automation of the recording process.
Cons:
- attracting the attention of crackers;
- presence of interfering wires leading to the cigarette lighter;
- need to purchase cards with a large amount of memory.
Many are accustomed to seeing DVRs in cars. But they are also used in other different industries.
Parameters for selecting the DVR
It is reasonable to select the appropriate DVR based on several factors - technical characteristics, quality and price ratio, availability of versatile feedback, brand popularity, etc.
When choosing a DVR for a car, it is necessary to pay attention to such parameters:
Video resolution
Indicator that affects the quality of the final image. The best extensions for recorders are HD( 1280: 720 p) and Full HD( 1920: 1080 p).Most budget models, whose expansion is far from the maximum, have a built-in interpolation function. This function stretches the picture to the desired size, but the image is broken into cubes. Therefore, when buying a device for your car, you need to make sure that there is a maximum resolution and no interpolation function.
The presence of the
screen Many modern models do not have a screen, but still it is much easier to use the device with it - it is easier to adjust the viewing angle, and also, if necessary, to quickly review the recorded material.
Angle of View
This indicator is responsible for coverage in video space in width. Optimal for acquisition are recorders with a viewing angle of 90-120 °.They will cover neighboring bands, all road signs and other details during the survey. If the indicator is below 90 degrees, then only the lane of the car will enter the frame, all events occurring to the left and right of the car will not be fixed. In the opposite case, if the viewing angle is too large, the quality of the image will suffer greatly. At the same time, it will be possible to consider all the small details, such as signs, numbers, inscriptions.
Number of cameras
Modern DVRs are models with one or more cameras that are able to capture all the events around the car, that is, from the side, from behind, in front or even inside.
Built-in memory
Almost all modern DVRs are equipped with an embedded memory card, which stores all video files. But video recordings can also be stored on the internal memory of the device. Its large volume will be appropriate in those cases when the memory card will need to be removed and temporarily transferred to someone. Battery capacity
As with any other mobile or household appliance, the battery capacity is important for the duration of its operation without connecting to the power supply. Do not select this option as the primary. Batteries work autonomously from 1 to 8 hours. But they can always be charged from the cigarette lighter. The duration of their work will be important only in the event of an accident and a violation due to this power supply of the car or simply in the event that the car stalled.
G-sensor or shock sensor
In case of damage to the car, the DVR will place this moment on the film in a separate file. These security measures are provided so that the device does not accidentally overwrite the key moment of video recording.
Speed of shooting
Another indicator that affects the quality of the final video. The optimal value of this speed indicator is at least 30 frames per second.
Dimensions and mounting method
Most drivers prefer to choose compact devices that do not clutter up the windshield and do not interfere with free viewing. The method of attachment can also be different: the suction cups to the glass, to the adhesive tape, to the dashboard. Here, every driver can choose a suitable option for their preferences.
Availability of HDMI, USB, TV-out
connectors They will allow you to view the recordings on any other devices.
Which DVR to choose
Buying a DVR should be a deliberate action. At first glance, the device in operation may seem ideal, but before the first unpleasant incident, when there will be significant gaps in the device.
To begin with, you should identify the main objectives of acquiring a gadget:
1. If you need to record the situation on the road and inside the cabin, you will need a recorder with two cameras. You can buy a universal model with the ability to connect any number of cameras. To do this, you should look at the characteristics of the device, in particular, the number of its channels.
2. The main property of devices is the fixation of information. Therefore, the main parameter is image quality. Budget models can not boast of a good expansion, which can turn in the event of any incident not in favor of the owner of the gadget. It is important to purchase such a recorder, whose recording quality remains at a high level even at night.
3. To save space, it became quite reasonable to purchase devices without screens. The device does not blind and does not distract the driver, can quickly and easily transfer information via cable or Wi-Fi function. Ergonomics and compactness are very important parameters, so sometimes there is simply no sense in having a too small DVR screen. If you buy a device with a screen, so much. He can perform the function of an electronic mirror, a rear-view camera or play the role of lane assistant.
4. Who wants to get not just a video storage device, but a multifunctional device, you should pay attention to models with additional properties. The GPS module can perform the function of a navigator, which is very convenient to combine in one device. The Parking mode function will save the device memory during downtime. The radar detector function will also be very useful.
Each user has certain preferences and requirements regarding DVRs. But for each buyer it will be useful to purchase a recorder with an ideal picture clarity, because that's the whole point of the device. This most important parameter can not outshine even the most modern and useful functions.
How much does the DVR
1. Modern DVRs no longer have sky-high prices, like their first models. Today you can find varieties in absolutely any price category.
2. The cost is primarily affected by the availability of additional functions for the device. Important factors - this is the quality of the assembly, the manufacturer, the main characteristics. Most of the gadgets are in the price range from 1.5 to 10 thousand rubles. The cheapest of them come from China or Taiwan. They do not stand out remarkable, except for value.
3. DVRs, which will be useful in the form of a clear detailed picture, have an average cost of 3-6 thousand rubles. Buyers who want to squeeze the maximum out of the device, evaluate additional functions and maximize the video, it will be necessary to prepare 6-10 thousand rubles.
Everyone has the right to decide how much to put on the right and useful device. Not necessarily the most expensive will be the most high-quality. But to save on such an acquisition is also not worth it.
