At present, there are differences in understanding the definition of NVR. There are mainly two viewpoints. Some manufacturers call the storage unit that stores, retrieves, and retrieves digital audio and video through the network as an NVR; some manufacturers define fully-integrated network video equipment. For NVR, all functions are integrated on one device. The difference between these two viewpoints is that one is to implement the function of network back-end video surveillance storage in a systematic way, and the other is to implement the same function in the manner of a device.
We believe that from a technical perspective, both of these methods can achieve the so-called NVR functions, each with its own strengths and weaknesses, and have their own applicable market areas. The first solution is more suitable for the formation of large-scale network video. Monitoring system, the second program is not only applicable to large-scale monitoring systems, but also applicable to small-scale monitoring systems.
From a market perspective, the current mainstream surveillance systems are still based on small systems; from the user's point of view, NVRs should be more similar to DVRs already familiar to customers, and operators can use NVRs without much learning and training. The NVR should have the basic characteristics of the DVR. From a technical point of view, the fully integrated NVR adopting the embedded technology inherits the advantages of the DVR, which is cost-effective, stable, and reliable, and does not have common problems such as viruses and operating system upgrades of the PC.
Through system stacking, in a large-scale network video surveillance system, distributed storage and centralized management are adopted. The fully-integrated NVR is highly competitive and can not only govern a small-scale surveillance system, but also can pass The interconnection of the network, the centralized monitoring function, and the relatively centralized storage solution not only drastically reduce the risk of network failures, but also significantly reduce the cost of storage. This can be verified by the extensive use of DVRs in urban security surveillance.
From the standpoint of market share of NVR, it mainly depends on the degree of application of IP cameras. Compared with analog cameras, IP cameras have many characteristics. For example, installation of IP cameras is more convenient. Adding cameras, moving cameras, or expanding storage capacity is easier and more convenient on IP-based networks. IP cameras have higher definition and can have 720p (1280x720) to 1920x1080 ( fullHD) multiple resolutions, can realize ePTZ technology, can realize higher frame rate, wider dynamic range, can realize intelligent analysis and VQD (VideoQualityDetection) function, and meet customer's diversification of security monitoring demand.
The rise of NVR is bound to be the rise of IP camera applications. Without the emergence of IP cameras, NVRs cannot be widely used. Analog video cameras and encoders (video servers) are just a transitional product of network monitoring. The all-digital processing of significance must be an IP camera. Only by using IP cameras can we break through the bottleneck of analog transmission, from video sources, video processing to transmission paths, and conduct comprehensive innovations to promote the full rise of NVR.
Judging from the current market situation, a large number of analog cameras are still being sold and installed. DVR applications still occupy the mainstream. New video surveillance solutions represented by IP cameras and NVRs have gone further in foreign countries. just began. The replacement of old and new requires a process that depends on the maturity of the IP video surveillance solution, the speed of decline in the overall cost, and the acceptance of the IP video surveillance solution for the entire market and customers. This time may be three years. It may be 5 years or even longer.
During this period of time, analog cameras and IP cameras coexist. They can coexist in different monitoring systems and can coexist in one monitoring system. This is the reason for the existence of hybrid DVRs. It can present three forms, either It is a pure DVR, all connected to analog cameras, but also pure NVR, all connected to IP cameras, you can also connect analog cameras and IP cameras, that is, hybrid DVR.
Hybrid DVRs will play an important role in the transition from analog cameras to IP cameras. It combines the features of DVRs and NVRs to provide a smooth transition of application solutions and avoid repeated investment by customers. For manufacturers, they can also reduce the product model, inventory, and promotion costs.
The core technologies of DVRs, hybrid DVRs, and NVRs have no essential differences. They must complete functions such as video recording, preview, playback, alarm processing, PTZ control, and network transmission. All have a video processing chip and a general-purpose processor (GPP). There are network interfaces, display interfaces, and storage interfaces. DVR is mainly coded, NVR is mainly based on decoding, codecs all need dedicated DSP or ASIC, DVR hybrid DVR and NVR do not have much difference in system architecture and manufacturing cost.
The current mainstream DVRs are already networked, and NVRs are further networked evolutions on the basis of DVRs. Therefore, there is no question of who will end up. NVR is the same as the DVR. The traditional DVR manufacturers still occupy the dominant position in the technology research and development of the NVR. It can even be inferred that the mainstream DVR manufacturers will evolve into the mainstream NVR manufacturers. Under the huge inertia of the market, if some manufacturers expect to replace DVRs with NVRs in a short time, they will violate the laws of the market itself.
Of course, with the development of the market and product technology, with the full rise of IP cameras, NVR is bound to use as the ultimate expression of back-end storage. The digital, network, and intelligent development direction of the security industry has not changed, and it has become digital and networked. Intelligent security monitoring system will bring greater value to customers.
We believe that from a technical perspective, both of these methods can achieve the so-called NVR functions, each with its own strengths and weaknesses, and have their own applicable market areas. The first solution is more suitable for the formation of large-scale network video. Monitoring system, the second program is not only applicable to large-scale monitoring systems, but also applicable to small-scale monitoring systems.
From a market perspective, the current mainstream surveillance systems are still based on small systems; from the user's point of view, NVRs should be more similar to DVRs already familiar to customers, and operators can use NVRs without much learning and training. The NVR should have the basic characteristics of the DVR. From a technical point of view, the fully integrated NVR adopting the embedded technology inherits the advantages of the DVR, which is cost-effective, stable, and reliable, and does not have common problems such as viruses and operating system upgrades of the PC.
Through system stacking, in a large-scale network video surveillance system, distributed storage and centralized management are adopted. The fully-integrated NVR is highly competitive and can not only govern a small-scale surveillance system, but also can pass The interconnection of the network, the centralized monitoring function, and the relatively centralized storage solution not only drastically reduce the risk of network failures, but also significantly reduce the cost of storage. This can be verified by the extensive use of DVRs in urban security surveillance.
From the standpoint of market share of NVR, it mainly depends on the degree of application of IP cameras. Compared with analog cameras, IP cameras have many characteristics. For example, installation of IP cameras is more convenient. Adding cameras, moving cameras, or expanding storage capacity is easier and more convenient on IP-based networks. IP cameras have higher definition and can have 720p (1280x720) to 1920x1080 ( fullHD) multiple resolutions, can realize ePTZ technology, can realize higher frame rate, wider dynamic range, can realize intelligent analysis and VQD (VideoQualityDetection) function, and meet customer's diversification of security monitoring demand.
The rise of NVR is bound to be the rise of IP camera applications. Without the emergence of IP cameras, NVRs cannot be widely used. Analog video cameras and encoders (video servers) are just a transitional product of network monitoring. The all-digital processing of significance must be an IP camera. Only by using IP cameras can we break through the bottleneck of analog transmission, from video sources, video processing to transmission paths, and conduct comprehensive innovations to promote the full rise of NVR.
Judging from the current market situation, a large number of analog cameras are still being sold and installed. DVR applications still occupy the mainstream. New video surveillance solutions represented by IP cameras and NVRs have gone further in foreign countries. just began. The replacement of old and new requires a process that depends on the maturity of the IP video surveillance solution, the speed of decline in the overall cost, and the acceptance of the IP video surveillance solution for the entire market and customers. This time may be three years. It may be 5 years or even longer.
During this period of time, analog cameras and IP cameras coexist. They can coexist in different monitoring systems and can coexist in one monitoring system. This is the reason for the existence of hybrid DVRs. It can present three forms, either It is a pure DVR, all connected to analog cameras, but also pure NVR, all connected to IP cameras, you can also connect analog cameras and IP cameras, that is, hybrid DVR.
Hybrid DVRs will play an important role in the transition from analog cameras to IP cameras. It combines the features of DVRs and NVRs to provide a smooth transition of application solutions and avoid repeated investment by customers. For manufacturers, they can also reduce the product model, inventory, and promotion costs.
The core technologies of DVRs, hybrid DVRs, and NVRs have no essential differences. They must complete functions such as video recording, preview, playback, alarm processing, PTZ control, and network transmission. All have a video processing chip and a general-purpose processor (GPP). There are network interfaces, display interfaces, and storage interfaces. DVR is mainly coded, NVR is mainly based on decoding, codecs all need dedicated DSP or ASIC, DVR hybrid DVR and NVR do not have much difference in system architecture and manufacturing cost.
The current mainstream DVRs are already networked, and NVRs are further networked evolutions on the basis of DVRs. Therefore, there is no question of who will end up. NVR is the same as the DVR. The traditional DVR manufacturers still occupy the dominant position in the technology research and development of the NVR. It can even be inferred that the mainstream DVR manufacturers will evolve into the mainstream NVR manufacturers. Under the huge inertia of the market, if some manufacturers expect to replace DVRs with NVRs in a short time, they will violate the laws of the market itself.
Of course, with the development of the market and product technology, with the full rise of IP cameras, NVR is bound to use as the ultimate expression of back-end storage. The digital, network, and intelligent development direction of the security industry has not changed, and it has become digital and networked. Intelligent security monitoring system will bring greater value to customers.
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