Method for playing back video and audio synchronistically in mobile media broadcast

Method for playing back video and audio synchronistically in mobile media broadcast

  • CN 1,960,485 A
  • Filed: 08/29/2006
  • Published: 05/09/2007
  • Est. Priority Date: 08/29/2006
  • Status: Active Grant
First Claim
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1. a Mobile Multimedia Broadcasting is looked the method that audio sync is play, and it is characterized in that, comprises the steps:

  • (1) determines video data, voice data, synchrodata in each channel data, and provide a channel header data to write down the public information of each channel;

    (2) the video data cutting with each channel is a plurality of video units, and provides a video packet header to write down the public information of this video data;

    With the voice data cutting of each channel is a plurality of audio units, and provides an audio frequency packet header to write down the public information of this voice data;

    (3) according to the initial reproduction time of each channel data, " absolute time stamp " information is set in described channel header data, write down the initial reproduction time of this channel data;

    (4) according to the initial reproduction time of each video unit and the relative time error of the initial reproduction time of this whole channel data, in each video packet header,, write down the broadcast relative time error of each video unit for each video unit is provided with " relative time stamp " information;

    According to the initial reproduction time of each audio unit and the relative time error of the initial reproduction time of this whole channel data, in each audio frequency packet header,, write down the broadcast relative time error of each audio unit for each audio unit is provided with " relative time stamp " information;

    The channel data that (5) will record " absolute time stamp " information and " relative time stamp " information sends from transmitting terminal.

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