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Media stream transmission method

A stream transmission and media stream technology, applied in the multimedia field, can solve problems such as media stream information theft, achieve low computing load, real-time media stream encryption capabilities, and reduce processing capacity requirements

Active Publication Date: 2010-01-20
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a media stream transmission method, which is used to solve the problem of media stream information being stolen and realize the transmission of secure encrypted media streams

Method used

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Embodiment Construction

[0019] Such as figure 1 As shown, it is a schematic flowchart of the first embodiment of the media stream transmission method of the present invention. This embodiment includes the following steps:

[0020] The first terminal judges whether the media stream needs to be encrypted before transmission, and if the above-mentioned media stream needs to be encrypted before transmission, the first terminal sends a session start request (hereinafter referred to as: INVITE) message carrying an extension field containing an encryption command to the control platform; if the above-mentioned media stream can be directly transmitted without encryption, the first terminal directly sends an INVITE message to the control platform;

[0021] The control platform judges whether the above-mentioned INVITE message carries the above-mentioned extension field, if the above-mentioned INVITE message carries the above-mentioned extension field, the control platform then generates a key for encrypting ...

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Abstract

The method comprises: the first terminal decides if the media stream needs to be encrypted, and sends a session starting request carrying an expanded field, or directly sends out the session starting request; the control platform decides if the session starting request carries the expanded field, and generates a key, and relays the session starting request with the key, or directly relays the session starting request; the second terminal decides if the session starting request carries the expanded field, and restores the key, and returns the response carrying the expanded field, and uses the key to make a selectable encryption for the media stream, or directly returns the response and directly sends out the media stream; the control platform decides if the response message carries the expanded filed, and relays the response message carrying the key, or directly relays the response message; the first terminal decides if the response message carries the expanded field, and restores the key and media stream, or directly reads the media stream.

Description

technical field [0001] The invention relates to a media stream transmission method, in particular to a method for selectively encrypting and then transmitting the media stream, and belongs to the field of multimedia technology. Background technique [0002] Multimedia technology with audio and video compression technology as the core has developed rapidly in recent years. At the same time, with the continuous advancement of computer network technology, especially the popularization of broadband networks, the product of the combination of the two is the so-called streaming media technology. Streaming media refers to continuous time-based media using streaming technology in the Internet, such as audio, video or multimedia files. Streaming media does not download the entire file before playing, but the data stream is transmitted at any time and played at any time. Streaming media transmission has become a key application in many current network services, such as video surveill...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/16
Inventor 马妍焦刚厉盛义白良张震董新久陈起魏六寿杨军石宇光陈华谭容长刘亚萍种玉良
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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