Mobile live broadcast system based on MPEG-2 standard

A MPEG-2, standard technology, applied in the field of live video, can solve the problems of mainstream players not being perfectly supported, inaccurate synchronization and rate, inaccurate playback speed, etc., to achieve good synchronization and rate, perfect support, and accurate playback speed Effect

Active Publication Date: 2014-09-10
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the serious network packet loss and inaccurate playback speed of the existing streaming media live broadcast system, the audio and video are sent and received in two channels, and the audio and video are recorded at the same time. Inaccurate, unable to perfectly support mainstream players and other def

Method used

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  • Mobile live broadcast system based on MPEG-2 standard
  • Mobile live broadcast system based on MPEG-2 standard
  • Mobile live broadcast system based on MPEG-2 standard

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] refer to Figure 1 to Figure 6 , a mobile live broadcast system based on the MPEG-2 standard, comprising a mobile device end, a streaming media server, and a player end, the mobile device end comprising a video data acquisition subsystem, the video data acquisition subsystem comprising H264 video compression encoding Module, MPEG-2 standard packet module and thread pool module; In the H264 video compression encoding module, call the API interface of the IOS system layer, open the camera function, collect the original video data, and perform H264 on each frame collected Encode to obtain the ES basic code stream; in the described MPEG-2 standard packet module, based on the video compression encoding of the MPEG-2 standard, the ES stream encoded by H.264 is packaged into a PES stream, and the PES stream is then fixed by 188B The length plus auxiliary data forms th...

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Abstract

The invention discloses a mobile live broadcast system based on MPEG-2 standard. The mobile live broadcast system comprises a mobile equipment end, a streaming media server and a player end, wherein the mobile equipment end comprises a video data collection sub-system which includes an H264 video compressing and encoding module, an MPEG-2 standard packaging module and a thread pool module; the thread pool module is connected with an RTSP signaling module and an RTP transmission module; the streaming media server comprises a live broadcast data forwarding module, an RTCP code rate control module, a video-on-demand module and an RTSP signaling module; the mobile live broadcast system also comprises an RTSP signaling server for sending an RTSP request open signaling or an RTSP request stop signaling. The mobile live broadcast system based on MPEG-2 standard improves the packaging mode and transmission mode of video streaming, can be applied to a mobile phone terminal to build a new signaling system to perform unified management, and thereby communication stability of every part of the system are ensured to be good.

Description

technical field [0001] The invention relates to the technical field of video live broadcast in the field of network live broadcast, in particular to a mobile live broadcast system. Background technique [0002] With the popularization of cable digital TV, the status of MPEG-2 system multiplexing technology has become increasingly prominent. According to the quality of the transmission medium, the MPEG-2 standard defines two multiplexed information streams: transport stream (TS: Transport Stream) and Program stream (PS: Program Stream). The difference between the TS stream and the PS stream is that the packet structure of the TS stream is of fixed length, while the packet structure of the PS stream is of variable length. Since the length of the PS packet changes, once the synchronization information of a certain PS packet is lost, the receiver will enter an out-of-synchronization state, resulting in serious information loss events. Since the TS code stream adopts a fixed-le...

Claims

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Application Information

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IPC IPC(8): H04N21/6437H04L29/06
Inventor 彭宏吴海巍徐志江孟利民吴涛
Owner ZHEJIANG UNIV OF TECH
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