During the purchase, product parameters should be analyzed to analyze the
shooting Angle, video resolution, compression format, cache, whether the video
can be turned off manually, emergency video recording, not to interfere with
other automobile electronic products, whether the card should be equipped,
etc.
Camera Angle
The camera Angle of the dashcam is mostly around 100 degrees, which can
basically ensure the shooting of both sides of the vehicle in the lane. Of
course, it's better for the owner to choose the biggest camera Angle possible,
but it also costs more money.
Video resolution
In general, when the video resolution is 1280*720, the license plate of the
car in front can be seen clearly, while the license plate of the next lane is
relatively blurred. In addition, the recorder's CMOS chip photosensitive ability
and the quality of the glass outside the lens. It is directly related to the
effect of its shooting at night.
Compressed format
Most data recorders use H.264 compression format. Not only does it take up
more storage capacity, but it also requires higher speed of memory card,
otherwise it is easy to lose frames and affect the compatibility of memory card
data recorders. The size of the 1-minute fragment compressed by H.264 with 720P
resolution is about 60MB. For car owners, a reasonable choice of record interval
time and capacity is conducive to timely forensics when accidents occur.
Generally speaking, it is advisable to choose 1 minute as the interval time.
The cache
Choose as large a cache as possible for smoother video and better memory card
compatibility.
The night vision effect
The night vision effect here refers to the low illumination performance of
products. Excellent products are not those with LED lights or infrared lights.
No matter how strong the supplementary light is, it will not be able to shine on
the road, and it will reflect on the front glass. Keep in mind that the products
with tinted lights are all made by shanzhai manufacturers, just to fool confused
buyers with a bunch of hype.
The tape open
If you can't turn it off, it's not good for the privacy of the car, and you
say something, and it's all on tape, you might have a very awkward situation.
The recorder produced by normal brands on the market has the function of
one-button silence.
Emergency video
Based on the aforementioned features of cycling video, if an image is
important but subsequent videos have to be shot, the previous important videos
will be automatically deleted. There is an emergency video design. If you have
an important image, you just need to press a key manually, which will force you
to save the video and not delete it automatically when the card is full.
Automatic emergency video is a gravity sensor that automatically protects the
video from being deleted when it is monitored for violent vehicle vibration.
This feature can be useful in the event of a collision.
Shielding measures
Copycat products are designed to reduce costs without any shielding measures,
there is no rigorous testing, will interfere with GPS navigation, remote
control, radio, tire pressure gauge and car computer and other automotive
electronic products, when the impact is huge.
Deserve to card
Because the video files recorded by the dashcam are very large,
high-definition views
Dual-lens shooting reduces the frequency of image edge distortion (source:
Network) up to nearly 100 megabits per minute, so the speed of memory card
writing is very demanding. The low speed calorific dash CAM can cause a crash.
Domestic market sales of flash CARDS mixed, the same card, high quality chip can
be repeatedly written more than 100,000 times, poor quality only about 2000
times. Generally recommended buyers friends with the original original card more
than CLASS6.
operation
Buy an easy-to-use, intelligent dashcam.
The effect
After receiving the auto data recorder, you can try it under various
conditions. Once it is tested, it will be more safe and reliable to use.
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