![\"Bitrate\"](\"http:\/\/cdn.shopify.com\/s\/files\/1\/0095\/4332\/articles\/bitrates_icon_1024x1024.png?v=1481827453\"){kind=icon}
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High bit rate = a lot of data can be transferred per second<\/p>\n
![\"bitrate\"](\"https:\/\/bisbrand.com\/wp-content\/uploads\/2020\/12\/bitrate-impact.png\")
\n.<\/p>\n
Sounds like a good thing.<\/p>\n
The network cameras managed by my company send the captured video data to a personal computer for viewing over the network.<\/p>\n
If you want to see the video, you want to see a beautiful video that moves sharply with high image quality, right?
\nHowever, the amount of data in a beautiful image is surprisingly large …<\/p>\n
In such case, if the bit rate is high, a lot of data can be transferred per second, so you can deliver beautiful images to your computer. On the other hand, if the bit rate is low, the amount of data that can be transferred per second is small, resulting in choppy and poor quality moving images.<\/p>\n
“Then the bitrate should be high anyway!”<\/p>\n
\u2026 That is not the case.
\nIn fact, in a surveillance camera system, there are the following disadvantages to increasing the bit rate.<\/p>\n
Disadvantages of high bit rate!
\nTransferring a large amount of data increases the load on the network line and equipment.<\/p>\n
There is an upper limit to the bit rate that can be transferred depending on the network environment. This depends on the LAN cable you are using, the performance of the hub, etc., but it will be difficult so I will skip it. Just think that there is an upper limit for the bit rate depending on the environment.<\/p>\n
“So what happens if it exceeds the upper limit?”<\/p>\n
In the case of video from a network camera, the connection often drops. If you exceed the upper limit, the line will be punctured and you will lose connection with the camera. The image may be interrupted for a moment, but if it is too bad, you will not be able to see the image from the camera at all.
\nIf this happens, it will be very troublesome …<\/p>\n
Also, if the bit rate is high, a large amount of data will reach the browsing computer and the recording NVR. When a lot of data arrives, the computer or NVR will not be able to process the data, which may cause abnormal operation (reboot, etc.).<\/p>\n
Therefore, the System Kay NVR defines the maximum bit rate that can be supported as a specification. The bit rate that the entire NVR can process such as performance and bandwidth limit per channel are described in the specifications.<\/p>\n","protected":false},"excerpt":{"rendered":"