Regarding the docking of the national standard, generally we use the main stream to browse the video normally, and rarely mention the auxiliary stream or the third-party stream. If the customer or your superior asks: Does the national standard support the auxiliary stream or the third party ? stream? Can or can't? It doesn't matter if you don't know, let's take a look at a classic case provided by a small partner in Nantong.
On-site situation description:
As a lower-level platform, our company connects with the higher-level through the national standard. After the connection is completed, when the upper-level platform browses the video, it gets the auxiliary stream or lower stream. How low is our auxiliary stream? Get as low as you can.
Analysis:
1. Who takes the flow? Who sends the flow?
Answer: The upper level fetches the stream, and the lower level sends the stream. For example: The upper level says, give me a 1M stream video, and then we give the upper level a 1M stream. So did you find the problem at this time? We will not take the initiative to send streams to the superiors, but according to the requirements of the superiors, what kind of streams the superiors need, and what kind of streams we send. So we have the idea of checking the problem. At this time, we will check what the superior's request is? So is this requirement defined in the national standard 28181? In fact, there is.
2. National standard 28181 live signaling process
3. Invite message from superior on site situation
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Refer to page 96 of the national standard 28181
Book download address: https://blog.csdn.net/dzxs_gb28181/article/details/86995996 There is a download address on page 29 of this book
It can be seen that the obtained code stream resolution is D1, and the code stream size is 1000kbps or 1M.
4. Positioning results.
The higher-level platform indicated its own requirements in the invite stream signaling. It is not that we did not send the stream according to the requirements, and the higher-level platform needs to rectify it by itself.
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