Tag: Low bandwidth monitoring H.264HP
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There are many factors plaguing the civilian security market. Apart from the price factor, a large part of the reason lies in its market application: When can HD and wireless be realized? In the high-definition surveillance environment, whether the civilian market is popular or not is a debatable topic. But at the root, the high-definition of the civilian market is also an important step in the popularization of high-definition; wireless monitoring also reflects the advantages of network monitoring and zero wiring.
HD low bandwidth monitoring - image codec
The way to solve HD surveillance in your home can be found. First of all, in terms of network monitoring, further upgrades can be made in codec. In the field of video surveillance, H.264 or MPEG-4 codec is mature. On this basis, some security vendors use the image compression standard as the source of development and use the H.264 High Profile coded DSP chip.
How to solve HD and wireless problems with home surveillance cameras
What are the advantages of H.264 High Profile? Compared with the ordinary H.264 codec, the upgraded technology can achieve the imaging effect of 1080p/30 frames under the network bandwidth of 2M~4M; Looking at it, the H.264HP compression standard can reduce bandwidth by 30%. It is also possible to achieve a 50% reduction in bandwidth due to the difference between the field of use and the industry.
The H.264HP compression standard is actually more suitable for wireless network transmission. Due to the low transmission bandwidth of the wireless network, in order to achieve high-definition effects in the home monitoring system, it is theoretically a very feasible method. In addition, in order to achieve high-definition monitoring in a wireless network environment, data loss must also be solved.
5% data lost video image has no effect?
For wireless networks, stability is a major challenge for testing network transmission media. Not to mention video surveillance, that is, in the daily Internet access, there may be places where wireless network coverage is not available, or when the signal is weak, the data loss phenomenon is no longer natural.
For some enterprises, the anti-lost technology is not completely lost, and it does not affect the image quality within 5% of the packet loss. In the front-end network camera, embedding this technology can achieve adaptive packet loss strategy, IPC monitors the network status in real time, and has the function of breakpoint retransmission. Simply understand, just like everyone has QQ online file transfer, once the network is abnormal or accidentally terminated, resending the file can retain the original progress, while receiving the complete data of the past.
Video monitoring storage
For home monitoring, in addition to solving the above two problems, the amount of data transmission and storage is also a big problem. If a hard disk recorder is used as a data storage device, the cost will inevitably increase, and the wiring process will inevitably be faced. Xiaobian suggested that it is possible to purchase monitoring equipment that is suitable for civilian use and home. Under the premise of supporting wireless functions, the camera can also achieve 1080p or 720p standard; in storage, it can be stored in the computer through the software platform, or it can be built in. SD card, in real-time monitoring, 720p images generate about 30G per month, and the current SD card also fully meets one month of video storage needs.
Having said that, under the HD video compression codec, not only the bandwidth is reduced, but also the pressure on the back-end storage device is reduced. High-quality compression reduces the storage space for data redundancy, and extracting the most valuable information is the most ideal realm for intelligent storage.
All in all, for the monitoring of civilian or other fields, if we want to coexist with high definition and wireless, it seems that the above problems are the problems we must solve first. Especially for wireless monitoring technology, low bandwidth is an unsolvable problem for security companies, but the only thing that can be done is how to achieve high-definition image and transmission storage under low bandwidth and unstable factors.
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