Method and system for carrying video stream media through network in multiple velocities

Abstract

The method includes steps: using layered encoding algorithm, the video server compresses video stream codes into basic data stream and expanded data stream, and assigning them corresponding priorities; video server builds up multicast group; sending all basic data stream and expanded data stream to the multicast group; based on application for admission from users, router of multicast node creates information of admission, and the information is reported stage by stage through router of upstream multicast node or reported directly; based on reported information, router is added to multicast group, and receives data stream in highest speed required by output port of the router. The invention also discloses system of carrying video stream media in multiple velocities of using the disclosed method.

Description

technical field [0001] The invention relates to data transmission and control technology in a network, in particular to a network video streaming media bearing method and system. Background technique [0002] With the rapid development of Internet and mobile communication technologies, especially the popularization and application of personal computers, mobile phones and PDAs (Personal Digital Assistants), users' demand for online video streaming services is increasing day by day. [0003] However, because users have different personal demands on the service quality of network video streaming media and network access methods, they also have different requirements for the service rate level of network video streaming media (such as watching football live broadcast on the Internet, There are users who watch through 10Mbps broadband, users who watch online with ADSL, and users who watch online through mobile phones; their access network bandwidths are different, so the requirem...

AI Technical Summary

Problems solved by technology

If some users have not received the corresponding data for a long time, they will detect congestion and exit the multicast group where the current network video data stream is located; however, other users in the same multicast group behind the same bottleneck do not Exit, the multicast forwarding tree will not be pruned, and congestion will still exist; similarly, if the receiving end user does not synchronize the operation of applying to join the multicast group, some group members may not be able to fully utilize the bandwidth and enjoy the corresponding online video streaming service

[0016] Fourth, the response speed of congestion control is slow

However, the performance of existing Internet networks is unstable, the jitter characteristics of available bandwidth cannot be predicted, and the video sources with variable rate encoding are more and more

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