Media stream rate synchronization

  • US 10,462,202 B2
  • Filed: 03/30/2016
  • Issued: 10/29/2019
  • Est. Priority Date: 03/30/2016
  • Status: Active Grant
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First Claim
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1. A computer-implemented method comprising:

  • receiving a video presentation comprising a plurality of media streams, each media stream having a respective playback rate;

    selecting a first one of the media streams as a clock stream;

    playing simultaneously the media streams according to their respective playback rates; and

    synchronizing at least a second one of the media streams with the clock stream, the synchronizing comprising;

    determining that an end of a first time interval has been reached;

    determining, at the end of the first time interval, a current playback time of the clock stream and a current playback time of the second media stream; and

    modifying the playback rate of the second media stream based on the current playback time of the clock stream and the current playback time of the second media stream, the modifying comprising calculating a new playback rate for the second media stream as a function of (1) a difference in current playback times between the clock stream and the second media stream and (2) a length of time of a next interval.

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