General factory camera surveillance content is determined by the size of the hard disk and save the video configuration. HD cameras should take about 500M of space for an hour, which is only about 360G for a month. So it can be used for more than a year.
When you use it, you can set the content retention time to three months or six months according to the actual situation, and the software will automatically erase more than the video to cover the new content up, so that the hard disk space will always be free.
Expanded information:
Camera (CAMERA or WEBCAM), also known as computer camera, computer eye, electronic eye, etc., is a kind of video input device, which is widely used in video conferencing, telemedicine and real-time monitoring.
Ordinary people can also talk and communicate with each other via webcam on the Internet with images and sound. In addition, people can also use it for a variety of popular digital video, audio and video processing.
The camera works roughly as follows: the scene through the lens (LENS) generated by the optical image projected onto the surface of the image sensor, and then converted to electrical signals, after the A/D?[1]? (analog-to-digital conversion) converted to digital image signals, and then sent to the digital signal processing chip (DSP) in the processing, and then transferred to the computer through the USB interface processing, through the monitor you can see the image.
References: