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Distributed real-time media composer

  • US 8,289,369 B2
  • Filed: 07/02/2009
  • Issued: 10/16/2012
  • Est. Priority Date: 11/14/2003
  • Status: Active Grant
First Claim
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1. A controller for videoconferencing, comprising:

  • a communications interface through which command signals are routed to a plurality of endpoints over a network;

    a capabilities module that exchanges information with the plurality of endpoints to determine encoding capabilities of said plurality of endpoints;

    a command signal generator configured to generate command signals to be sent to said plurality of endpoints via said communications interface, said command signals instructing said plurality of endpoints to establish sessions between respective of said plurality of endpoints, said sessions being compatible with the encoding capabilities of the plurality of endpoints so that encoding is performed at the endpoints but not in the controller; and

    a processor that forms a combined frame from a first partial frame sent from a first endpoint and a second partial frame sent from a second endpoint, said processor configured to operate in a robust mode of operation when an observed packet loss rate from a stream from said first endpoint is greater than a predetermined level.

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