Video stream file transmission method and device based on scalable selection window

Abstract

The present invention discloses a video stream file transmission method and device based on a scalable selection window. The method includes: according to network conditions of a streaming medium sending end and a streaming medium receiving end during a butting procedure, a video monitoring platform dynamically adjusts a sending strategy. By using the method of the present invention, a code rate or resolution ratio sent by a video stream does not need to be changed, i.e., a code stream does not need to be changed from a video coding layer. On a known monitoring platform, attributes of a video coding terminal do not need to be changed. The method and device of the present invention use a buffer, and a sending circular queue having a sending sliding window, to effectively calculate and obtain an original frame rate of the video and intervals among the sent frames; and the video stream can be sent under a network congestion condition by changing the sent intervals among the frames during a video transmission process..

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a video stream file transmission method and device based on a scalable selection window. Background technique [0002] Usually, during the docking process of two video surveillance platforms, one platform (such as video proxy server, streaming media sender) will transmit surveillance video streams to the other platform (such as video proxy client, streaming media receiver). However, when transmitting high-definition surveillance video streams in a low-speed network environment, due to the limitation of network bandwidth, there will often be smearing and blurred screens when the receiving end plays video streams, which will seriously affect the quality of video transmission and browsing. Thus affecting the entire docking effect. [0003] Although with the development and popularization of optical fiber broadband technology, the above narrow bandwidth situation will...

AI Technical Summary

Problems solved by technology

It dynamically adjusts the encoding bit rate according to the heartbeat of RTCP (Realtime Transport Control Protocol), but its frame rate is not adjusted. This technical solution can only be used for front-end encoding equipment, not for monitoring platforms. It is because the monitoring platform cannot adjust the bit rate, and it will affect the clarity of the video

[0005] The patent name is "Mobile Video Stream Customization Device and Method Applied to Mobile Video Surveillance System", the application (patent) number is 200910110307.6 and the patent name is "Wireless Video Surveillance System and Method for Dynamically Adjusting Code Stream According to Network Conditions", the application Two Chinese patent documents (patent) No. 201010295223.7 provide an overall method for conversion of code rate, resolution, and encoding format. This technical solution is effective for browsing video streams with a small amount of concurrency. The technical solution cannot be applied to the situation of large-scale concurrent browsing

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