1. There are several types of cameras, and different cameras take up different recording spaces.
2. The general monitoring time of banks is between one and three months, and the longest is indefinite, because as long as the storage is full, it will be replaced with a new one.
3. However, with the development of technology, digital surveillance video has appeared. For example, the video is in a compressed format and a high-definition digital photo is taken in 5 minutes, which is saved on the hard disk and can also be burned. Saved for DVD so it can be saved longer.
4. The calculation formula for the daily video file size of each surveillance camera:?
The calculation formula for the space occupied by each channel of surveillance video for 24 hours a day: 3600 seconds (per hour)* 24 hours (every day) * code rate (128kbps-8Mbps)/8 (conversion of bytes and bits) / 1024 (conversion to M)/1024 (conversion to G) ≈21G (the code rate is calculated based on 2Mbps as a column) Divide the hard disk capacity by the daily video file size and then divide it by the number of cameras to get the number of days the video will be saved. :
Camera (CAMERA or WEBCAM), also known as computer camera, computer eye, electronic eye, etc., is a video input device that is widely used in video conferencing, telemedicine and real-time monitoring.
Ordinary people can also talk and communicate with each other with images and sounds on the Internet through cameras. In addition, people can also use it for various currently popular digital imaging, audio and video processing, etc.
Cameras can be divided into two categories: digital cameras and analog cameras. A digital camera can convert the analog video signal generated by the video capture device into a digital signal, and then store it in the computer.
The video signal captured by the analog camera must be converted into a digital mode through a specific video capture card and compressed before it can be converted to a computer for use.
Digital cameras can directly capture images and then transmit them to the computer through serial, parallel or USB interfaces. The cameras in the computer market are basically digital cameras, and the digital cameras are mainly USB digital cameras that use new data transmission interfaces. Most of the products on the market are of this kind. In addition, there is a product used with video capture cards, but it is not mainstream yet.
Due to the rapid popularity of personal computers, the overall cost of analog cameras is high, and they cannot meet the BSV LCD splicing screen interface. The transmission speed of the USB interface is much higher than the speed of the serial port and parallel port, so the market Digital camera with USB interface.
The analog camera can be used with a video capture card or USB video capture card. It is very convenient to connect to a computer. The typical application is general video surveillance. Clean area cameras, embedded special cameras in clean areas, are special cameras for real-time monitoring of important equipment and key positions in clean rooms in clean areas.
The camera is a pure flat panel, embedded in the color steel plate and installed, with zero sanitary dead corners, easy to clean, easy to install, can quickly deploy and control multiple points, and is compatible with mainstream video systems
The camera (webcam) is generally It has basic functions such as video recording/transmission and static image capture. After collecting the image through the lens, the photosensitive component circuit and control component in the camera process the image and convert it into a digital signal that can be recognized by the computer. Then through The parallel port or USB connection is input to the computer and then the software performs image restoration.