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Stream media transmitting rate controlling method

A technology of sending rate and control method, applied in the direction of digital transmission system, electrical components, transmission system, etc., can solve problems such as short pause, mosaic, client packet loss, etc.

Active Publication Date: 2008-11-26
WUHAN HONGXU INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the client’s back buffer has no data, it is called underflow (underflow). At this time, the client has no data to play, and there will be a short pause to cache a certain amount of data; when the buffer is full, it is called overflow ( overflow), at this time, the client will actively drop packets, resulting in mosaic and other phenomena during playback

Method used

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] figure 1 It is the overall control structure of the embodiment of the present invention, the server-side rate control is mainly related to 100 file reading part, 101 decision control part, 102 transmission control part.

[0045] During the playback of streaming media, the transmission control part 102 obtains the media stream sent by the file reading part 100 and sends the corresponding RTP packet 104 and RTCP packet 103 through the IP network 300; The RTP data packet 203 is put into the buffer 201 for use by the decoding player 200 , and the data packet 204 received by the client from the IP network 300 is put into the QoS monitoring feedback part 202 .

[0046] The QoS monitoring feedback part 202 of the client sends the RTCP report 204 to the server regularly through the monitoring buffer 201, and the server decision control part 101 analyzes the RTCP pack...

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Abstract

A method for controlling transmission speed rate of stream media includes deciding speed rate switch-over direction and estimating server transmission speed rate to be decided by setting threshold analysis PRCP RR packet and parameter in RTCP NADU packet, calculating current usable network band width by using parameter in RTCP RR packet, applying decision-maker to carry out decision analysis for obtaining final transmission speed rate and switch-over direction according to estimated speed rate to be decided and said switch-over direction as well as calculated current usable band width.

Description

technical field [0001] The invention belongs to the field of mobile network multimedia communication, and relates to a streaming media server transmission rate control technology based on a real-time streaming protocol and a real-time streaming control protocol. Background technique [0002] Streaming Media (Streaming Media) is a media transmission and processing technology. Its basic feature is that the media content is divided into individual data packets after being processed by the server and transmitted continuously on the network. Real-time playback processing. For example, in the VOD (Video On Demand) application of streaming media, instead of downloading the entire file and playing it, the streaming media player sets a buffer to play while downloading. Its advantage is that it can save the waiting time for downloading the entire file , and does not require users to have a large disk space for storage. In addition, setting buffers can also alleviate the impact of net...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06
Inventor 吴桑许鹏李卫兵
Owner WUHAN HONGXU INFORMATION TECH