Media flow self-adapting transmission method based on internet

An adaptive transmission, Internet technology, applied in the field of MPEG-4 stream adaptive transmission, which can solve the problems of congestion, unsuitable transmission, and a large amount of transmission overhead.

Inactive Publication Date: 2004-01-14
SHANGHAI HUNTEK TECH
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  • Summary
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Problems solved by technology

Therefore, the Fast Loss Internet Image Transmission (FLIIT, Fast Loss Image Transmission) method proposed by someone has eliminated the delay caused by retransmission, and can also achieve the effect of TCP transmission. In fact, it is a source of information. /channel joint forward error correction coding technology, but this method introduces a large amount of t...

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  • Media flow self-adapting transmission method based on internet
  • Media flow self-adapting transmission method based on internet
  • Media flow self-adapting transmission method based on internet

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Embodiment Construction

[0019] In the general Internet-based video transmission scheme, UDP is used as the transport layer protocol. This is because the transmission efficiency of UDP is higher than that of TCP. More importantly, the TCP protocol has a retransmission mechanism to ensure reliable transmission, so it will introduce delay, which is extremely unfavorable for real-time multimedia transmission. During real-time streaming media transmission, the decoder regards multimedia data packets arriving after the specified decoding synthesis time as invalid. RTP is a transmission protocol for multimedia data streams on the Internet. RTP is defined to work in one-to-one or one-to-many transmission situations, and its purpose is to provide time information and achieve stream synchronization. RTP relies on RTCP to provide these services. RTCP and RTP together provide flow control and congestion control services. During an RTP session, each participant periodically transmits RTCP packets. The RTCP pa...

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Abstract

The invention discloses a media stream self-adapting transporting method based on the internet comprising, a. establishing RTP/UDP/IP protocol structure, wherein the data plane of the protocol structure is in charge of using the media video stream and audio stream packaged by RTP, while the control plane of the protocol structure transmits the control instructions simultaneously using the RTCP feed back network information and RTSP, establishing a congestion control structure based on the transmitting end that can be applied both in the real time coding and in the video frequency transfer storage. The invention can realize the best playback quality possible on the user end under the changes of the network operation.

Description

technical field [0001] The present invention relates to a kind of media flow self-adaptive transmission method based on Internet (Internet), more specifically, it is about the Internet-based MPEG-4 flow self-adaptive transmission method, so that under the situation that the Internet network operating conditions are constantly changing, it can Dynamically adjust the transmission of MPEG-4 code stream, so that the client can obtain the best possible playback quality. Background technique [0002] The backbone network foundation of streaming media technology is the Internet, and the Internet provides a "best effort" (best effort) service support, that is, it does not provide QoS (Quality of Service) guarantee for the transmitted data. The Internet is an open heterogeneous network. For multimedia data transmission such as video and audio, the main problems are transmission delay, delay jitter and packet loss. The root cause of these problems is insufficient network bandwidth, w...

Claims

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Application Information

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IPC IPC(8): H04N7/24
Inventor 王洪燕胡敏李富堂
Owner SHANGHAI HUNTEK TECH
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