Who can tell me how long the video of the camera is usually kept? How long can the longest one be kept?

1, there are several kinds of cameras, and unreasonable cameras occupy different spaces.

2. Generally, the monitoring time of banks is kept between one and three months, and the longest is indefinite, because as long as the deposits are full, they will be replaced.

3. But with the development of science and technology, digital surveillance video has appeared. For example, the video is in compressed format, and 5-minute high-definition digital photos can be taken, which can be saved on hard disk and burned into DVD, so that it can be saved for a longer time.

4. The calculation formula for monitoring the daily video file size of each camera is:

The formula for calculating the space occupied by the surveillance video of each channel for 24 hours a day is: 3600 seconds (per hour) *24 hours (per day) * code rate (128kbps-2Mbps)/8 (byte-to-bit conversion)/1024 (converted into M)/ 1024.

Camera or webcam, also known as computer camera, computer eye, electronic eye, etc. , a video input device, is widely used in video conferencing, telemedicine and real-time monitoring.

Ordinary people can also have video and audio conversations and communicate with each other on the Internet through the camera. In addition, people can also use it for various popular digital images, audio-visual processing and so on.

Cameras can be divided into digital cameras and analog cameras. Digital cameras can convert analog video signals generated by video acquisition equipment into digital signals, and then store them in computers.

The video signal captured by analog camera must be converted into digital mode by special video acquisition card and compressed before it can be converted into computer.

Digital camera can shoot images directly, and then transmit them to computer through serial port, parallel port or USB interface. The cameras in the computer market are mainly digital cameras, and digital cameras are mainly USB digital cameras with new data transmission interfaces, which are mostly visible in the market. In addition, there is another product that works with the video capture card, but it is not the mainstream.

Due to the rapid popularization of personal computers, the overall cost of analog cameras is high, and it can not meet the interface of BSV LCD splicing screen. The transmission speed of USB interface is much higher than that of serial port and parallel port, so there are digital cameras with USB interface on the market.

Analog camera can be used with video capture card or USB video capture card, which is convenient to connect with computer. The typical application is general video surveillance. Clean area camera, clean area embedded special camera is a special camera for real-time monitoring of key parts of important equipment in clean room.

Camera plate, embedded color steel plate, zero sanitary dead angle, convenient cleaning, convenient installation, fast multi-point control, compatible with mainstream video systems.

Webcam generally has the basic functions of video shooting/transmission and still image shooting. After the lens captures the image, the image is processed by the photosensitive element circuit and control element in the camera and converted into a digital signal that can be recognized by the computer, and then input into the computer through the parallel port or USB connection, and then the image is restored by software.