Patent ID: 9137486
Filing Date: 2015-09-15
Classification: H04N

Abstract:
1. A system comprising at least one processor configured to: receive a request from a first endpoint to subscribe to a first multicast group, the first endpoint associated with a first user; cause the first endpoint to receive a video stream associated with a second user if the first user is not speaking when the request from the first endpoint was received; cause the first endpoint to receive a video stream associated with a third user if the first user is speaking when the request from the first endpoint was received; receive a request from a second endpoint to subscribe to a second multicast group, the second endpoint associated with a fourth user; cause the second endpoint to receive a first video stream if the fourth user is not speaking when the request from the second endpoint was received, the first video stream comprising a first plurality of video streams, the first plurality of video streams comprising a video stream associated with a user speaking when the request from the second endpoint was received; and cause the second endpoint to receive a second video stream if the fourth user is speaking when the request from the second endpoint was received, the second video stream comprising a second plurality of video streams, the second plurality of video streams comprising a video stream associated with a user speaking prior to receiving the request from the second endpoint.