Why network video server + analog cameras the size is much larger than the size of the Network Camera?

Why network video server + analog cameras the size is much larger than the size of the Network Camera?
There is no denying that the current Chinese market DVS + analog camera application scale is much larger than the amount of IP Cameras, in addition to such mixed analog-digital price is cheaper, what factors contribute to the pattern of this application? Objective point of view can not be from the amount of the IP Network Camera market in China, DVS stand in front of a more objective factors. DVS Why stand in front of the IP Camera?
More successful companies, and their views with representatives in the DVS products online. Its technical department colleagues said: "stable analog camera technology and variety can be adapted to a variety of application scenarios need to have a strong flexibility in the portfolio with DVS, network conditions and limitations of the IP address makes its cost-effective from the viewpoint of today, still, customers are more easily accepted by IP Cameras currently on the market into a misunderstanding, the intervention of the operators and promote low prices is becoming synonymous with Network Camera, while ignoring the users in different application of the actual demand in the scene. "
From the original investment protection point of view, analysts believe that: "First, the existing analog control point during the network transformation, for the protection of the original investment considerations, the vast majority of DVS + original analog cameras. types of IP Cameras is still relatively small, so rich Unlike analog cameras, often can not meet the user's monitor point deployment requirements, the user can only select analog cameras + DVS way. "
DVS + analog camera application scale is much larger than the amount of IP Cameras, the first historical reasons, because of the transition phase is now in the analog surveillance to IP surveillance, DVS can be increased on the basis of the original analog cameras to IP surveillance system, can be effectively protect existing investments; second analog camera technology is mature, and has a complete product line, integrators or users of analog camera technology trust completely free to choose from different vendors can be based on the needs of different types of analog cameras, without the need to consider compatibility issues, Network Camera can not match; Third, IP Cameras set video capture, encoding compression, transmission, storage, intelligence and other functions into one, integrators and users of its stability have some doubts, and the DVS + analog cameras perform their duties, the two are completely mature products, stability, security. "
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