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Method and apparatus for smoothing transmission code rate of time division stream media

A media transmission and stream bit rate technology, applied in the field of time-division streaming media bit rate smoothing processing, can solve the problems of large difference in time stamps and complicated subsequent processing process, achieve smooth bit rate, avoid unsmooth bit stream or lost data, The effect of maintaining quality

Inactive Publication Date: 2008-11-26
GLOBAL INNOVATION AGGREGATORS LLC
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is the shortcoming that the time stamps of the video and audio media streams in the same multiplexed subframe differ greatly and the subsequent processing process is complicated in the prior art, in order to provide a method that can smooth the code rate of the media stream, At the same time, keep the time stamp interval difference of each media stream in the same frame (subframe) structure small enough, and keep the start synchronization of each media stream in the same frame (subframe)

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  • Method and apparatus for smoothing transmission code rate of time division stream media
  • Method and apparatus for smoothing transmission code rate of time division stream media
  • Method and apparatus for smoothing transmission code rate of time division stream media

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Embodiment Construction

[0032] The method of the present invention will be further described below in conjunction with the accompanying drawings.

[0033] The associated functional blocks involved in the method of the present invention are shown in the appendix figure 1 , is mainly implemented in the time-division frame code rate smoothing processing module, of course, the method of the present invention is also applicable to the combination process of this functional block and other functional components.

[0034] From figure 1 It can be seen that the code stream input by the stream is a media stream including video and audio code streams. The video and audio in the media stream can be independent code streams in the RTP transmission mode, or composite code streams such as TS system streams. According to the requirements of the time-division frame (sub-frame), the time-stamp conversion module stamps the received different media streams with the unified time stamp (time-division frame time stamp) r...

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Abstract

The invention provides a method for smoothing the transmission bit rate of time division flow media and a device. The method comprises: the time division frame / sub frame period arrives, packaging the time division frame / sub frame; inputting video stream data into a buffer region, collecting the video stream data packed into the next sub frame, taking out the video stream data to be arranged into the buffer region; if at the system initial state, the last video data is not buffered, adopting the buffer region to directly replace the buffer region to start a next period; if the buffer region has the video data of last time, adopting its media time stamp interval to attain audio media data, packaging the video and audio media data into the frame / sub frame structure, and adopting said buffer region to replace the buffer region. The invention can effectively smooth the bit rate of time division flow media, thus is adaptive to the transmission channel demanding a limited bit rate.

Description

technical field [0001] The invention relates to the field of mobile multimedia, in particular to a method and a device for smoothing code rate smoothing of time-division streaming media in a mobile multimedia system. Background technique [0002] With the continuous development of the Internet and communication technology, people's demand for personalized mobile systems is also increasing, and mobile multimedia technology is born out of this demand. my country's industry standards on mobile multimedia technology have also been officially released successively, forming industry norms on mobile multimedia and promoting the industrialization of mobile multimedia technology. [0003] In the mobile multimedia technology, the standard specifications and technologies of the channel layer and the multiplexing layer are the two core parts. In the specification of the multiplexing layer, the multiplexing subframe is an important content. In the multiplexing subframe, media streams su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/24H04N7/52H04L29/02H04N21/231H04N21/234
Inventor 童登金张建强阮亚平
Owner GLOBAL INNOVATION AGGREGATORS LLC
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