Network Video Surveillance is IP Surveillance. IP is the abbreviation for Internet Protocol. It is one of the most commonly used protocols for communication over computer networks. Network video surveillance is the transmission of digital video information over wired or wireless IP networks. As long as the network is reachable, video monitoring and recording can be realized, and this monitoring can also be perfectly combined with many other types of systems. With the ever-increasing range of applications, there are more and more errors in the application of network video surveillance in the security industry.
Myth # 1: Transmission of video on the Internet is not secure enough Fact: Although the original purpose of the network was to make the information public enough, it could be used as long as the proper security measures such as firewall, VPN, or password protection technology were used. To transmit some highly sensitive information.
In fact, many banks and some financial institutions use the Internet to handle some global financial things. There is no doubt that it must also be a reliable medium for security surveillance and remote monitoring. Compared with digital surveillance, the confidentiality of analog surveillance is much worse, and it has almost no confidentiality. Anyone can see these so-called security information under the analog system, and even falsify this information, causing huge losses. IP monitoring will never happen.
Myth #2: I'm installing an analog surveillance system and I don't have any IP monitoring. Fact: Perhaps DVR providers want people to believe this, but in fact, the development of video server technology has bridged the gap between analog surveillance and digital surveillance. The insurmountable gap. Just connect the analog camera to the video server, and then convert the video signal collected by the analog camera into a digital signal and transmit it on the network. In other words, the video server allows the analog camera to have the function of a network camera. In fact, for most users who already have analog monitoring systems, they prefer to choose their own way to build their own IP surveillance systems, or hybrid IP surveillance systems consisting of network cameras and video servers. In short, your existing analog surveillance system will never stop you from moving toward IP monitoring.
Myth #3: The video of the network video is not as clear as the simulation. Fact: The real-time monitoring effect of the network camera is exactly the same as that of the video playback. Of course, the image has undergone digital compression processing, and the effect is slightly less than that before the unprocessed analog signal. The traditional hard disk recorders are inconsistent with the monitoring and playback effects. Because the signals are directly transmitted during monitoring, the effect is good, and the playback results are also compressed. The effect depends on the compression technology used by different manufacturers.
Moreover, with the development of technology, network cameras and IP monitoring technologies can reach a megapixel resolution, and analog cameras can only reach a resolution of 40,000 pixels at most because of their technical limitations.
Myth #4: If network congestion occurs or even a sudden disconnection, IP monitoring will suddenly collapse, so it is very unreliable. Fact: IP network architecture was able to provide redundant backup functions in the early 1960s and early 1970s. It has always been a huge demand.
As of today, various storage servers, network switches, and optional routers have been providing such simultaneous backup functions. The function of the storage server is to ensure that the offline and convenient data can be retrieved. The application of backup power, hot-swap RAID disk, fault-tolerant storage, and dual network adapters can help implement redundant backup functions. Although a small network structure may not require all of these complex security measures, choosing a high-quality IT component is in any case much more reliable than a traditional CCTV solution, a VCR or a DVR, and is urgent in the event of a problem. Processing is also much less time consuming than DVR solutions.
Network monitoring is not mature?
Myth #5: IP monitoring is good, but it seems to be a short distance away from us, at least for 5 years. Fact: It seems that the era of application of IP monitoring is just the crux of all problems! Let us explain with specific data. Since the launch of the first network camera in 1996, 200,000 network cameras have been successfully sold and installed, and this number is also rising rapidly year by year, which fully demonstrates that people’s interest in IP monitoring is also increasing. Because people gradually found that, whether it is from the cost or reliability or any other point of view, IP monitoring has been proven both for the current and future-oriented mature solutions.
Myth 6: If all the video information is transmitted over the network, then it will not cause network congestion or even collapse. Fact: If only a few monitoring points are available, the existing Fast Ethernet (100Mbit) can satisfy the transmission. Bandwidth requirements. The user can adjust the bandwidth according to the compression ratio and the frame rate. If it is multiple monitoring points, we recommend that you have a dedicated network line. This is quite similar to rail transit. Once the existing rail line becomes congested, it will have to build some new rail lines to ease the strain on the line. Moreover, for large-scale enterprise applications, the local network is usually a gigabit LAN. Using switches and routers, the network can be divided into different network segments.
Moreover, the intelligent function of the network camera can already choose whether to send video according to conditions such as event triggering, dynamic detection, and preset time. The amount of video information that needs to be transmitted is not too much. Almost 10% of the time it takes to transmit information, and no video information is transmitted on the network in 90% of the time.
Myth #7: Network cameras are much more expensive than analog cameras. IP surveillance is too expensive. Fact: In terms of price, network cameras are more expensive than analog cameras. But you should also see that its function is analog video camera analog, digital signal compression, image transmission and intelligent control functions. Compared to all costs of monitoring systems based on DVR architectures, IP monitoring is cheaper than it is. For an analog system, it's not that you buy a DVR and it's all okay. You also have to purchase a lot of related equipment such as a large number of analog video cables. Moreover, if you want to achieve PTZ control, you also need to lay a lot of additional video cables, and PTZ function in the IP monitoring is still achieved through the network cable, and does not require additional cables. Original address: http://security.zol.com.cn/349/3498643_all.html
Myth # 1: Transmission of video on the Internet is not secure enough Fact: Although the original purpose of the network was to make the information public enough, it could be used as long as the proper security measures such as firewall, VPN, or password protection technology were used. To transmit some highly sensitive information.
In fact, many banks and some financial institutions use the Internet to handle some global financial things. There is no doubt that it must also be a reliable medium for security surveillance and remote monitoring. Compared with digital surveillance, the confidentiality of analog surveillance is much worse, and it has almost no confidentiality. Anyone can see these so-called security information under the analog system, and even falsify this information, causing huge losses. IP monitoring will never happen.
Myth #2: I'm installing an analog surveillance system and I don't have any IP monitoring. Fact: Perhaps DVR providers want people to believe this, but in fact, the development of video server technology has bridged the gap between analog surveillance and digital surveillance. The insurmountable gap. Just connect the analog camera to the video server, and then convert the video signal collected by the analog camera into a digital signal and transmit it on the network. In other words, the video server allows the analog camera to have the function of a network camera. In fact, for most users who already have analog monitoring systems, they prefer to choose their own way to build their own IP surveillance systems, or hybrid IP surveillance systems consisting of network cameras and video servers. In short, your existing analog surveillance system will never stop you from moving toward IP monitoring.
Myth #3: The video of the network video is not as clear as the simulation. Fact: The real-time monitoring effect of the network camera is exactly the same as that of the video playback. Of course, the image has undergone digital compression processing, and the effect is slightly less than that before the unprocessed analog signal. The traditional hard disk recorders are inconsistent with the monitoring and playback effects. Because the signals are directly transmitted during monitoring, the effect is good, and the playback results are also compressed. The effect depends on the compression technology used by different manufacturers.
Moreover, with the development of technology, network cameras and IP monitoring technologies can reach a megapixel resolution, and analog cameras can only reach a resolution of 40,000 pixels at most because of their technical limitations.
Myth #4: If network congestion occurs or even a sudden disconnection, IP monitoring will suddenly collapse, so it is very unreliable. Fact: IP network architecture was able to provide redundant backup functions in the early 1960s and early 1970s. It has always been a huge demand.
As of today, various storage servers, network switches, and optional routers have been providing such simultaneous backup functions. The function of the storage server is to ensure that the offline and convenient data can be retrieved. The application of backup power, hot-swap RAID disk, fault-tolerant storage, and dual network adapters can help implement redundant backup functions. Although a small network structure may not require all of these complex security measures, choosing a high-quality IT component is in any case much more reliable than a traditional CCTV solution, a VCR or a DVR, and is urgent in the event of a problem. Processing is also much less time consuming than DVR solutions.
Network monitoring is not mature?
Myth #5: IP monitoring is good, but it seems to be a short distance away from us, at least for 5 years. Fact: It seems that the era of application of IP monitoring is just the crux of all problems! Let us explain with specific data. Since the launch of the first network camera in 1996, 200,000 network cameras have been successfully sold and installed, and this number is also rising rapidly year by year, which fully demonstrates that people’s interest in IP monitoring is also increasing. Because people gradually found that, whether it is from the cost or reliability or any other point of view, IP monitoring has been proven both for the current and future-oriented mature solutions.
Myth 6: If all the video information is transmitted over the network, then it will not cause network congestion or even collapse. Fact: If only a few monitoring points are available, the existing Fast Ethernet (100Mbit) can satisfy the transmission. Bandwidth requirements. The user can adjust the bandwidth according to the compression ratio and the frame rate. If it is multiple monitoring points, we recommend that you have a dedicated network line. This is quite similar to rail transit. Once the existing rail line becomes congested, it will have to build some new rail lines to ease the strain on the line. Moreover, for large-scale enterprise applications, the local network is usually a gigabit LAN. Using switches and routers, the network can be divided into different network segments.
Moreover, the intelligent function of the network camera can already choose whether to send video according to conditions such as event triggering, dynamic detection, and preset time. The amount of video information that needs to be transmitted is not too much. Almost 10% of the time it takes to transmit information, and no video information is transmitted on the network in 90% of the time.
Myth #7: Network cameras are much more expensive than analog cameras. IP surveillance is too expensive. Fact: In terms of price, network cameras are more expensive than analog cameras. But you should also see that its function is analog video camera analog, digital signal compression, image transmission and intelligent control functions. Compared to all costs of monitoring systems based on DVR architectures, IP monitoring is cheaper than it is. For an analog system, it's not that you buy a DVR and it's all okay. You also have to purchase a lot of related equipment such as a large number of analog video cables. Moreover, if you want to achieve PTZ control, you also need to lay a lot of additional video cables, and PTZ function in the IP monitoring is still achieved through the network cable, and does not require additional cables. Original address: http://security.zol.com.cn/349/3498643_all.html
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