The present invention discloses a video-telephone
system. Compared with the conventional video-telephone
system, the video-telephone
system disclosed by the invention, not only includes a video terminal, a bearing network and a communication
server, but also includes a
video processing device and a preset
video media library. The communication
server also controls all video
stream transmitted from terminals to forward through the
video processing device, except conventional
authentication and
call routing. The preset
video media library records a variety of
video media. The
video processing device principally obtains a preset video media from the video media
library, and then overlaps with media received from a video terminal, and then transmits out the video after
processing. The present invention also discloses a
operation mode of the video-telephone, when a video terminal initiates a video call, the communication
server use signalling control to transmit video media of both sides of the communication to the video
processing device for forwarding, the video
processing device overlaps a preset media
stream of the video media library onto each video media
stream, and then forwards to the remote side of the communication. The present invention enables the video-telephone system to have a
video advertising spreading function, which is propitious to commercialization applications.