Method for synchronously playing streaming media audios and videos based on parallel processing

An audio and video synchronization and parallel processing technology, applied in the field of streaming media audio and video image processing, can solve the problems of mismatching decoding speed and rendering speed, audio and video playing out of sync, etc.

Inactive Publication Date: 2013-04-03
SICHUAN JIUZHOU ELECTRIC GROUP
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for synchronous playback of streaming media video based on parallel processing for the problems of mismatching decoding speed and rendering speed and / or asynchronous audio and video playback existing in the current streaming media audio and video playback process

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  • Method for synchronously playing streaming media audios and videos based on parallel processing
  • Method for synchronously playing streaming media audios and videos based on parallel processing

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Embodiment Construction

[0019] In the following, the present invention will be further described in detail through specific embodiments in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, the present invention divides the playing process of audio and video data from one or more network service points or local existing streaming media into audio and video acquisition, audio and video splitting, video decoding, audio decoding, and time stamping. There are several steps such as error analysis, video rendering, and audio playback. The process of processing each step can be composed of corresponding processing modules through computers. These modules can run on the same multi-processor server or on a network-connected On different servers, by starting operations in parallel, these processing processes can be parallelized in time and / or space at the same time, that is, at the same time, different servers or different processors of the same server can process each step in para...

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Abstract

The invention discloses a method for synchronously playing streaming media audios and videos based on parallel processing, and belongs to the field of audio and video image processing. By dividing the playing process of streaming media audio and video data from one or more network service points or local existing streaming media audio and video data into the steps of audio and video acquisition, audio and video splitting, video decoding, audio decoding, time stamp error analysis, video rendering, audio playing and the like, based on a split time stamp, whether video playing after audio playing and video rendering meets playing conditions or not is judged, accordingly, the audios and the videos are synchronously played, and the problem of mismatching of video decoding speed and rendering speed is solved. The steps can be operated on the same server of a multiprocessor or different servers connected through a network, so that parallel processing in terms of time and/or space can be realized by means of parallel starting operation.

Description

technical field [0001] The invention relates to the field of streaming media audio and video image processing, in particular to a streaming media audio and video playing method. Background technique [0002] The current mainstream video codec standards include MJPEG (Motion JPEG, a video compression format, in which each frame of image is coded by JPEG, which can also be referred to as MJPE), H264, etc., all adopt the traditional hybrid coding structure. The structure adopts time and space prediction, transformation, quantization and entropy coding methods, and the video frame coding is set to different frame types: I frame, B frame, P frame, which will inevitably cause the video decoding speed to vary due to different frame types , and the rendering frame rate of the video is fixed, resulting in a phenomenon that the video decoding speed does not match the rendering speed. [0003] Since audio and video streams require synchronous playback, and audio and video data are dec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/434H04N21/8547
Inventor 吴小伟刘念林李汶隆
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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