VIDEO CONFERENCING WITH MULTIPOINT CONFERENCING UNITS AND MULTIMEDIA TRANSFORMATION UNITS WITH ACTIVE SPEAKER DETECTION

摘要

In one embodiment, a method includes receiving at a multimedia transformation unit, media streams from a plurality of endpoints, transmitting audio components of the media streams to a multipoint conferencing unit, receiving an identifier from the multipoint conferencing unit identifying tone of the media streams as an active speaker stream, processing at the multimedia transformation unit, a video component of the active speaker stream, and transmitting the active speaker stream to one or more of the endpoints without transmitting the video component to the multipoint conferencing unit. An apparatus is also disclosed. In other embodiments redundant streams are used to replace a failed stream, also packet offsetting is used to decorrelate channels.