Multi-channel adaptive network bandwidth audio and video stream transmission control method and multi-channel adaptive network bandwidth audio and video stream transmission control system
A technology of adaptive network and stream transmission control, applied in transmission systems, digital transmission systems, data exchange networks, etc.
Inactive Publication Date: 2017-12-05
CHENGDU SANLING KAITIAN COMM IND
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[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a channel adaptive network bandwidth audio and video stream transmission control method and system, which solves the fluency problem of audio and video transmission, thereby providing audio and video transmission services in a limited network Better audio and video effects and fluency guarantee in a bandwidth environment
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[0043] Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known circuits, software or methods have not been described in detail in order not to obscure the present invention.
[0044] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in one emb...
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The invention discloses a multi-channel adaptive network bandwidth audio and video stream transmission control method and a multi-channel adaptive network bandwidth audio and video stream transmission control system, and relates to the audio and video transmission control field. The multi-channel adaptive network bandwidth audio and video stream transmission control method comprises steps that congestion control based on delay: arrival time and size of every data packet are recorded, and a delay change between data groups is calculated, and then a current network congestion condition is determined, and a code rate estimation value is finally output; congestion control based on packet loss: the packet loss information is acquired from RTCP RR, and RTT is acquired, and a final code rate value is calculated by using code rate information provided by TMMBR or REMB, and then an encoder is used to change the code rate and resolution after the encoding according to a code rate parameter, and therefore the adaptive adjustment of the code rate is realized. The multi-channel adaptive network bandwidth audio and video stream transmission control method and the multi-channel adaptive network bandwidth audio and video stream transmission control system are advantageous in that an audio and video transmission fluency problem is solved, and therefore guarantee is provided for realizing of good audio and video transmission effect and fluency of audio and video transmission business in a limited network bandwidth environment.
Description
technical field [0001] The invention relates to the field of audio and video transmission control, in particular to a multi-channel adaptive network bandwidth audio and video stream transmission control method and system. Background technique [0002] As the main transmission content of today's and next-generation networks, audio and video streaming applications will greatly affect people's daily life. However, problems such as packet loss and available bandwidth jitter caused by network channel heterogeneity and terminal diversity have greatly reduced the service quality of real-time audio and video streaming media. If you simply reduce the quality of video and reduce the demand for transmission rate, when transmitting through different networks on various terminals, it will cause the problem of low network bandwidth utilization. Therefore, for the transmission rate, according to the network channel The bandwidth and the adaptive control of various terminals become the key...
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IPC IPC(8): H04L12/801H04L12/823H04L12/825H04L12/841H04L29/06H04L47/32
CPCH04L47/12H04L47/25H04L47/283H04L47/32H04L65/80
Inventor 吴震沈宜董弋粲牟文炬陈帅
Owner CHENGDU SANLING KAITIAN COMM IND
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