Processor
Model of the processor used in the dashcam
The term "video chip" is used mainly for devices with classic capabilities, "processor" — for advanced models with an abundance of non-standard functions. However, anyway, we are talking about the same component — the main computing unit, the characteristics of which directly affect the capabilities of the recorder as a whole. Knowing the model of the processor, you can find detailed data on it and evaluate how satisfied you are with a device based on such electronics. Of the most advanced modern chips, one can name, in particular,
Ambarella A7L,
Ambarella A12,
Novatek NTK96655,
Novatek NTK96660 and
HiSilicon Hi3516.
Full HD (1080)
The maximum resolution and frame rate of video taken by the recorder in the
Full HD (1080p) standard.
Many people associate the term Full HD with a resolution of 1920x1080 — and indeed, this resolution is very popular, including among DVRs. However, this standard also covers other options — in particular, 1440x1080 (4:3 aspect ratio) and 1920x540 (halved vertical size). In general, support for this resolution is a good indicator for a modern registrar, indicating that the device belongs to at least an average level.
As for the frame rate, the
higher it is, the smoother and less blurry the video will be, the better the details on moving objects will be visible, and also the more space the footage will take up. It is worth noting here that in low-cost Full HD recorders, shooting can be carried out at very low speeds — 15 fps or even 10 fps. Such a shooting speed allows you to watch video more or less normally, but for a normal display of moving objects, a higher frame rate is still desirable — at least 25 frames / sec.
Viewing angle
The viewing angle provided by the main camera of the dashcam. It is usually indicated along the diagonal of the frame, less frequently along the horizontal, which is why models with the same numbers in the specifications may differ somewhat in actual field of view. So, if you have any doubts about this, it wouldn't hurt to find and watch video samples from different models when selecting one.
All else being equal, a wider viewing angle allows you to cover more area, but individual details in the frame appear smaller. Furthermore, wide-angle lenses cause geometric distortions in the image (however, a DEWARP function may be provided to correct this, see "Features"). As for specific numbers, viewing angles
up to 120° inclusive are considered relatively small for modern recorders, values of
121 – 140° can be called medium,
141 – 160° are above average, and the most wide-angle models are capable of covering an area of
more than 160°.
