System and method for required real-time transcoding and self-adaptive code rate stream media playing

Abstract

The invention relates to a system and a method for required real-time transcoding and self-adaptive code rate stream media playing. The system comprises a real-time transcoding subsystem, a stream media playing subsystem, a content distribution subsystem and a user terminal module, wherein the real-time transcoding subsystem is used for transcoding the original videos of a video source into video encoding data which is suitable for a user terminal to play, the stream media playing subsystem is used for packaging the video encoding data outputted by the real-time transcoding subsystem into video steams which are suitable for the stream media to transmit, and providing the stream media service for the user terminal, and the user terminal module is used for sending a request to the real-time transcoding subsystem or the stream media playing subsystem, and dynamically switching and transcoding in real time according to the network state information, so as to obtain the video streams with different code rates for playing. By adopting the structure, the system and the method for the required real-time transcoding and the self-adaptive code rate stream media playing have the advantages that the required real-time transcoding of the stream media is realized, the playing code rate is dynamically selected according to the change of the band width of the terminal network, different user terminals can be flexibly matched, and the application range is wider.

Description

technical field [0001] The present invention relates to the technical field of video playback, in particular to the technical field of real-time video transcoding, and specifically refers to a system and method for realizing on-demand real-time transcoding and adaptive code rate streaming media playback. Background technique [0002] Internet and mobile Internet applications have penetrated into thousands of households so far. With the enhancement of terminal processing capabilities, the advancement of triple play and the gradual increase of network bandwidth, multi-screen video services have become one of the important services carried out by operators. [0003] At present, most of the video services carried out by operators adopt the offline transcoding method. In order to enable the same video content to be played on different terminals, it is necessary to offline transcode each original video content into corresponding video files with multiple bit rates in advance. For ...

AI Technical Summary

Problems solved by technology

The offline transcoding method to provide cross-screen video services mainly has the following weaknesses: (1) There are many remote video sources. If such video sources are all converted into video files with multiple bit rates, it will waste a lot of server resources. Computing resources will consume a lot of storage space, and it will also increase the cost of data consistency maintenance; (2) The offline transcoding method is not suitable for live video services; (3) The transcoding rate and other parameters are pre-set and cannot be completely Adapt to terminals of various types and network conditions

[0004] In addition, operators also use real-time transcoding systems to provide live broadcast services. Most of them use hardware transcoding. The current real-time transcoding systems also have the following weaknesses: (1) The parameters such as transcoding formats, resolutions, and bit rates are often pre-set , cannot be adaptively set and changed according to different terminal conditions; (2) does not consider on-demand transcoding and on-demand distribution according to the number of users of video programs, resulting in waste of computing resources and network resources

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