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, and in particular to a method and device for transmitting a video stream file based on a scalable selection window. Background technique [0002] Generally, during the docking of two video surveillance platforms, one platform (such as a video proxy server, streaming media sending end) will transmit a surveillance video stream to another platform (such as a video proxy client, streaming media receiving end). However, when transmitting high-definition surveillance video streams in a low-speed network environment, due to the limitation of network bandwidth, there are phenomena such as smearing and blurring at the receiving end when playing the video stream, which will seriously affect the quality of video transmission and browsing. Thereby affecting the entire docking effect. [0003] Although with the development and popularization of optical fiber broadband technology, the above-mentioned...

AI Technical Summary

Problems solved by technology

It dynamically adjusts the encoding code rate according to the RTCP (Realtime Transport Control Protocol) heartbeat, but its frame rate has not been adjusted. This technical solution can only be used for front-end encoding equipment, not for monitoring platforms. This 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 (Patent) No. 201010295223.7 two Chinese patent documents provide an overall method for bit rate, resolution, and encoding format conversion. This technical solution is effective for browsing video streams with less concurrent traffic, but the The technical solution cannot be applied to the situation of large-scale concurrent browsing

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