What kind of body camera is good?
So how to choose the right body worn camera? You can probably refer to it from many areas:
Assembly line method
The assembly line method of body worn camera is generally fixed on the body of the staff on duty. At present, there are alligator clips, magnetic back clips, shoulder clips and other parts on the market. Among them, the magnetic back clips are more firm and generally cannot be Pull it out.
Total number of surveillance cameras
body worn camera usually have people order single shooting, double shooting and triple shooting. Among them, the three surveillance cameras are more omnidirectional. One front camera is used for selfies and cooperation; the rear dual camera has a main camera for video recording and a secondary camera for photo shooting. This scenario is suitable for background management in real-time In the case of video surveillance, you can turn on the function of video recording.
There are standard and mini-types. The advantages of the mini-type depend on the lightness, but the disadvantages are also significant, and the battery power is small. For shutdown, if there is a long-term continuous application, consider the removable rechargeable battery
1.5 inch, 2.0 inch, 2.4 inch, no display, etc. Generally 2.4 is the mainstream product, which can be touched, this also depends on the application scenario
Generally,body worn camera do not have built-in running memory, and they have to be expanded by memory cards. If it is MicroSD card expansion or SD card expansion, the volume is 8G, 16G, 32G, 64G, 128G; it can meet the needs of customers with greater video storage requirements, according to their needs, the larger the running memory, the price of the body worn camera is natural The higher it will be. Generally, you should decide how much running memory to buy according to the image quality of the body worn camera and the record storage of the surveillance camera. The ultra-clear body worn camera has 720p and 1080p, and the 16G card records 720p video. It can only record video for 4 hours, and the indoor space occupied by 1080p video is nearly twice that of 720p. There are also memory cards that generally need to choose a high-speed card class10, otherwise the video recording will be terminated.
Video resolution and file format
The resolution and frame rate of the audio file is a key indicator value to consider the image quality ofbody worn camera. The sales market for body worn camera is divided into four types: general, ultra-clear, high-definition, and high-definition. The ultra-clear body worn camera have 720p @30FPS, 720p@60FPS, 1080p@30FPS, 1080p@60FPS, HD has 1296P@30FPS. The file format suitable for H.265 is better than H.264. Under the same picture quality, H.265 occupies less indoor space. Naturally, the service platform must apply and analyze the H.265 file format to be able to broadcast. There are still some computers for consumption. The sex player is not compatible with H.265 analysis.
There are several general shooting methods, most of which are adjusted based on the viewing angle of the surveillance camera: 90 degrees, 100 degrees, 120 degrees, 140 degrees, 150 degrees, 170 degrees, etc. The body worn camera of mainstream products are equipped with 120-degree or 140-degree ultra-wide-angle lens. A single wide-angle lens can't reach the 170-degree wide-angle lens. Even if the 170-degree interface is achieved, it will be more severely deformed, which will harm the clarity of the interface.
According to the definition division, there are four types of body worn camera: 300,000 resolution, 1.3 million resolution, 2 million resolution, and 5 million resolution. Some of them indicate 12 million, 36 million, and 48 million resolutions that refer to static data photography. It is not the video clarity value.
Summary: Surveillance cameras should use a larger shooting technique, which is beneficial for all-round recording of nearby conditions. However, it should be noted that the angle of view of the wide-angle lens should not be too exaggerated to prevent distortion of the photographed interface.
The body worn camera must have good picture quality and the ability to work at night. The high resolution is determined by the main control chip of the body worn camera. In this case, the buyer must be concerned about the image processing plan of the main control chip of the body worn camera. That is to say, the body worn camera must have sufficient storage space to maintain reasonable long-term recording.
The image processor file formats of mainstream products are MOV, avi, and H.264 file formats. If the body worn camera can't reach 30 frames per second, the video will be stuck and not smooth in the 1080P shooting mode. In the 720P shooting mode, at least 24 frames per second that human eyes can blend into, can see a smooth and clear video interface.
According to the body worn camera requirements of the National Compulsory Certification Quality Center, all must pass 3C verification before they can be sold on the market. Therefore, shop buyers must choose carefully when choosing well-known brands, and purchase the products made by reliable manufacturers with 3C verification to ensure safety.