Video conference virtual endpoints

摘要

A method and a device providing one virtual endpoint dedicated to serve one particular real endpoint, and the virtual endpoint is typically installed on a server in the same local network as the associated real endpoint, where an MCU or a fraction of a distributed MCCJ also is installed. In the upstream direction, the virtual endpoint includes at least an upstream decoder, a scaling unit and an upstream encoder. In the downstream direction, the virtual endpoint includes at least a number of decoders, a composing unit and a downstream encoder.

主权项

1. A multipoint control unit adapted to be associated with a video conference endpoint that is adapted to participate in a multi-party video conference, the video conference endpoint being adapted to encode and transmit an upstream encoded media stream including at least video data in an upstream direction and to receive and decode a combined media stream in a downstream direction, the multipoint control unit comprising:
a host server; a virtual endpoint installed on said host server and comprising:
an upstream decoder adapted to decode the upstream encoded media stream received from the video conference endpoint into an upstream decoded media stream;a scaling device adapted to scale the upstream decoded media stream into a scaled upstream media stream;a media composer adapted to compose, from a set of downstream decoded media streams of a first resolution and a second resolution, a combined downstream media stream; andat least one downstream encoder adapted to encode the combined downstream media stream; at least one upstream encoder installed on said host server and adapted to encode the scaled upstream media stream into an encoded scaled upstream media stream for transmission over a backplane to one or more other host servers involved in the multi-party video conference; and one or more downstream decoders installed on said host server and adapted to produce said set of downstream decoded media streams by decoding a downstream encoded media stream of said first resolution and decoding at least one of a number of downstream encoded media streams of said second resolution, said downstream encoded media streams received from said backplane.