A method for solving the blurred screen phenomenon produced by the video stream transmission system

Abstract

The invention provides a method for solving the blurred screen phenomenon generated by the video stream transmission system. The method introduces a message queue and an intermediate agent. The message queue is used to cache the video stream transmitted by the server to the client through the UDP protocol, and the intermediate agent accepts the download sent by the server. Request and cookie, to determine whether the video stream has been sent to the client, and if it has been sent, determine whether the video stream cached for the first time in the message queue has packet loss. If there is packet loss, it needs to be cached again, and continue to let the server send the second The cached data is sent to the message queue for caching. When there is no packet loss, the video stream of the download request that the server accepts again will not be cached in the message queue, and the intermediate agent will directly call the video stream in the message queue and send it to the client. , which solves the problem of blurred screen due to packet loss or streaming, and avoids the technical problem of wasting too much bandwidth due to the server resending the video stream.

Description

technical field [0001] The invention belongs to the technical field of video transmission, and in particular relates to a method for solving the blurred screen phenomenon generated by a video stream transmission system. Background technique [0002] The main function of the streaming media server is to transmit the video stream to the client through the streaming protocol (RTP / UDP, etc.), for the monitor to monitor and watch or send it to the processor for processing and decoding. [0003] Since the UDP protocol is an unreliable and connectionless simple transmission protocol, the existing video stream cannot guarantee that the data can reach the destination accurately and reliably during the transmission process, and packet loss is prone to occur; This kind of unknown, the server sends data to the client, the server does not know whether the client has received it normally, after the server receives the download request, it will continue to send video streams, so when the c...

AI Technical Summary

Problems solved by technology

[0003] Since the UDP protocol is an unreliable and connectionless simple transmission protocol, the existing video stream cannot guarantee that the data can reach the destination accurately and reliably during the transmission process, and packet loss is prone to occur; This kind of unknown, the server sends data to the client, the server does not know whether the client has received it normally, after the server receives the download request, it will continue to send video streams, so when the client stops receiving data unexpectedly due to some reasons, the server does not I don’t know, but I still insist on sending data to the client. When the client requests to download the video stream again, the server receives the instruction to send data twice, and streaming will occur. Whether it is packet loss or streaming, it will cause the client to There is a blurred screen phenomenon when watching videos. The current solution is to check whether the IP of the stream information sent by the UDP protocol stream detection interface is the same as the IP of the receiving client. If they are the same, close the video stream being sent by the server. In addition, through Introduce the heartbeat packet protocol to receive the feedback information from the client, but the above two methods cannot well solve the blurred screen phenomenon caused by the packet loss problem

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