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This article analyzes modern video compression formats, presents and substantiates the algorithm for calculating the required volume of the DVR to allow storage of video surveillance systems for the required period, provides a procedure for selecting a hard drive in terms of forms of the drive factor, its power consumption and disk speed. When designing modern video surveillance systems, it is necessary to take into account a significant number of factors. The main ones are a type of video cameras, their number, video compression format, image quality, frame activity, shelf life, drive reliability. The advantage of the video surveillance system is the ability to store video data for the required period with the ability to view them. The storage device uses a SD memory card on the camcorder, a storage device in the video recorder, cloud technologies. This article discusses how to save data to the hard disk of the DVR. To date, both analogue and digital or IP video cameras have become widely used, which differ in the principles of video signal generation and network connectivity. The number of camcorders is determined by the characteristics and parameters of the protected object. Every modern IP camcorder supports several data compression formats, which differ in the principles of operation, compression ratio, image quality, and for analogue camcorders compression is performed in the DVR. These factors ultimately affect the total video memory required. In addition, it is important to ensure the reliability of the drive, especially to ensure the monitoring of important objects. Keywords: DVR; video camera; video compression format; codec; drive; video surveillance system.
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