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System and method to estimate end-to-end video frame delays

  • US 9,369,742 B2
  • Filed: 12/06/2012
  • Issued: 06/14/2016
  • Est. Priority Date: 12/06/2012
  • Status: Active Grant
First Claim
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1. A method to calculate video frame delay in a video stream received by a telecommunications endpoint, the method comprising:

  • locating reference features that are characteristic of content in the received video stream;

    calculating, by use of a processor, reduced reference features from the located reference features;

    receiving reduced reference features of a transmitted video stream, the transmitted video stream corresponding to the received video stream;

    calculating, by use of a processor, a received trajectory of the reduced reference features from the received video stream;

    calculating, by use of a processor, a transmitted trajectory of the reduced reference features from the transmitted video stream; and

    calculating, by use of a processor, video frame delay as a time shift between the received trajectory and the transmitted trajectory.

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