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Multimedia video communication method and system

A video communication and multimedia technology, applied in the field of communication, can solve problems affecting the accuracy of the report, etc.

Active Publication Date: 2008-04-23
SNAPTRACK
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] 3. The first two functions require all participants to send RTCP packets, so in order for RTP to increase the number of participants proportionally, the rate of RTCP packets must be controlled
However, if the transmission is too small, it will affect the accuracy of the report, which is a contradiction

Method used

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  • Multimedia video communication method and system
  • Multimedia video communication method and system
  • Multimedia video communication method and system

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Embodiment Construction

[0108] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0109] The first embodiment of the present invention relates to a multimedia video communication method, which includes an H.264 video transmission quality monitoring report method and an interaction-based error elimination method. Typically used in H.264 two-way video systems, such as video telephony. The general structure of the two-way video system is as follows: figure 1 shown. In the two-way video communication mode, each terminal of the communication system has both an encoder and a decoder. Based on this feature, the receiving end can record the information into the Supplemental Enhancement Information (Supplemental Enhancement Information, "SEI") field of the encoded code stream of the terminal, and send it to the remote end. In this way, a dedicated fe...

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Abstract

The method and system for multimedia video comm raises effect and efficiency of mechanism for detecting and reporting transmission quality of H.264 video network. The receiving end transfers info of quality monitored through feedback with in-band mode so as to avoid using additional channel. Only in time when receiving error occurs, the receiving end feed back info of quality monitored so as to reduce overhead of bandwidth as well as provide feedback in real time. Using SEI expanded message with in-band mode to feed back info of quality monitored, the invention is compatible with current H.264 protocol completely. Calculating priority index of video data, and based on degradation degree of channel, the sending end selects N units of video data with highest priority index in current frame or next frame; and then the said video data with highest priority index are encoded in frame and sent to the receiving end to eliminate error at the receiving end.

Description

technical field [0001] The invention relates to the communication field, in particular to multimedia video communication technology. Background technique [0002] The H.264 video compression coding standard formulated by the International Telecommunication Union-Telecommunications Standardization Sector (ITU-T) in conjunction with the ISO / IEC MPEG International Standards Organization has gradually become the mainstream standard in multimedia communications. A large number of H.264 multimedia real-time communication products (such as conference TV, videophone, 3G mobile communication terminal) and network streaming media products have come out successively. Whether to support H.264 has become a key factor in determining product competitiveness in this market segment. Looking back at the development history of H.264, we found that with the emergence of the third generation mobile communication (The Third Generation, referred to as "3G") system and the rapid development of IP ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N7/64H04N19/89
Inventor 宋彬李彦秦浩罗忠
Owner SNAPTRACK
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