How to estimate the storage space size?

To select the appropriate storage device for the video surveillance solution, you first need to estimate the storage capacity requirements. According to the current mainstream compression method, the calculation is as follows:

H.264 compression method: D1 resolution, 25 frames in real time

H.264 compression method: HAFL D1 resolution, real-time 25 frames, 300M / hour / channel;

H.264 compression method: CIF resolution, real-time 25 frames, 200M / hour / channel;

The video data storage capacity is measured by the number of video channels and storage time;

From this table, we can basically estimate the type of image definition equipment needed to store a video surveillance project. For example, a bank needs a D1 video surveillance system, 7 * 24 hours of monitoring, data can be covered for 3 months, then the total capacity requirement is 1.1TB.

At present, it is possible to use a fixed bit rate frame extraction technology, such as storing 25 frames / s of video files within one month of the image, which can be reduced to 15 frames / s without affecting the video recording information. This can greatly save storage space.