The dash cam, a black box of the car, prevents racketeers, confirms responsibility and records some funny things on the way. In fact, it also can be used as DV, because of especially compression format( such as H.264), so its effect is more excellent than a mobile phone is. Besides, it supports monitoring, especially infrared light.

From the view of the function, a lot of dual lens dash cam has a speed sensor that can be set. When the external impact is larger than the set value, current videos can be recorded and be used as evidence. Some good dash cam also has GPS to record the driving speed. And some high-end product also has image recognition that identifies marking lines on roads and provides features, such as yaw warnings on advanced cars. In addition, some products with motion detection can monitor. But its main function of the dash cam is to record the reliable and effective videos. 

By the way, LED by dash cam is useless, just think, the road can see clear under the headlight, could the smaller LED do that? If your front windshield isn’t clean, the stains illuminated will affect the night vision effect. It is useful to supplement light when it is used for indoor photography or short-distance recording. 

The dash cam consists of a lens, CMOS, chip, software, and others. CMOS is always designed into a common version with the chip(soc) after the manufacturers specify the model. In the same program, lens and software determine the final effect. In addition, the public version is often a more eclectic performance and cost, the factory can use the non-public version of the performance, not the use of a non-public version of the program to cut corners. As a result, the program became the key to the dash cam.

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