Method and system for audio/video cocurrent flow transmission

Abstract

The invention discloses a video-audio cocurrent flow transmission method and a system. The method includes the following steps: input video and audio data are cached by sender equipment according to a timeslice cycle and are scheduled according to playing time sequence. The video and audio data after the scheduling are respectively used as a video unit and an audio unit and are encapsulated into a video section and an audio section in a media frame. Moreover, the playing time information of the video unit and the audio unit is written into the media frame, and the media frame is transmitted to the receiver equipment through a broadcast channel. The receiver equipment obtains a media frame from the broadcast channel and analyzes the video unit, the audio unit and the playing time information out from the media frame. The playing time of each video and audio unit is obtained by calculation, and then the video unit and the audio unit are decoded in sequence and are played according to corresponding playing time. With the method and the system proposed by the invention adopted, the video-audio synchronous control of the terminal can be simplified, the buffer time of the terminal is reduced, the complexity of the video-audio analysis is decreased and user experience is improved.

Description

technical field [0001] The invention relates to the technical field of mobile multimedia broadcasting or mobile phone television, in particular to a method and system for co-stream transmission of video and audio in mobile multimedia broadcasting. Background technique [0002] Mobile multimedia broadcasting is a multimedia playback technology that has emerged in recent years. With a handheld terminal, you can watch TV even while moving at high speed. The terminal receives the program list through the wireless protocol, and can select the channel it has the authority to watch, and receive the multimedia data of the selected channel, so as to realize watching TV on the mobile terminal. [0003] The air data transmitted by the system is divided into different channels, and the data of each channel includes three types: video, audio and data, which need to be transmitted separately through multiplexing technology; the terminal can receive relevant data and play it through the t...

AI Technical Summary

Problems solved by technology

The TS protocol is one of the MPEG (Moving Picture Expert Group, Moving Picture Experts Group) standards. It transmits video and audio in a fixed 188-byte packet, which is distinguished by the PID (Program Identifier) ​​field. Video and audio, which can support the transmission of video and audio in a TS stream; however, each packet of the TS method is small, and the terminal needs to be parsed hierarchically. In order to obtain a complete video and audio frame, a large number of TS packets need to be buffered, and the parsing logic more complex

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