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Conversion method of multiplexing protocols in broadcast network

A technology of broadcasting network and conversion method, applied in the field of mobile multimedia broadcasting or mobile TV, can solve the problems that TS programs cannot be directly converted into CMMB programs, etc., and achieve the effect of protecting equipment

Inactive Publication Date: 2007-05-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the direct conversion of TS programs into CMMB programs cannot be realized in the existing broadcast television network

Method used

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  • Conversion method of multiplexing protocols in broadcast network
  • Conversion method of multiplexing protocols in broadcast network
  • Conversion method of multiplexing protocols in broadcast network

Examples

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Embodiment Construction

[0033] As shown in Figure 1, the conversion from TS to multiplexed frames is based on the PID (packet identifier) ​​in the TS to extract the video PES (packed elementary stream) packets and audio PES (packed elementary stream) packets in the TS stream respectively. , and then remove the PES header, take out the ES (Elementary Stream) packet, and repackage it into video data units and audio data units in the multiplexed frame. Usually, 1 PES packet can be divided into 1 or more video data units and audio data units. At the same time, the PTS (presentation time stamp) or DTS (decoding time stamp) of the Option header of the PES is correspondingly converted into the display time of the video data block and the audio data block, so as to realize the synchronization of video and audio playback.

[0034] As shown in Figure 2, the encoder outputs the H.264 transport stream and sends it to the transcoder. The transcoder does not need to convert the source compression algorithm, but nee...

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Abstract

The method comprises: extracting the PES packet from TS packet; extracting the PTS or DTS from the PES extended packet, and converting the PTS and DTS into the time stamp in multiplexing frame; extracting the ES packet from PES, and according to the CMMB multiplexing protocol, filling the video ES packet into the video unit, or filling the audio ES packet into the audio unit; encapsulating the multiplexing frame and transmitting it.

Description

technical field [0001] The invention relates to a mobile multimedia broadcasting or mobile phone TV technology, in particular to a conversion method of a broadcasting network multiplexing protocol. 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 while moving at high speed. The terminal receives the program list through the wireless protocol, and can select the channel it has the right to watch, so that it can receive the multimedia data of the selected channel, and realize watching TV on the mobile terminal. [0003] The air data transmitted by the system is divided into different channels. The data of each channel includes three types: video, audio and auxiliary data. The terminal can receive the relevant data, and realize the normal broadcasting of the TV through the player on the terminal. [0004] There are multiple multiplexing methods for the ...

Claims

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Application Information

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IPC IPC(8): H04N7/52H04N7/62
Inventor 沈灿张建强李嵘王志英晏祥彪陈军文海龙
Owner ZTE CORP
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