Multicast video advertisement insertion using routing protocols

摘要

First video material is transmitted from a video source, over a video content network, to consumer premises equipment, via a hub router. The video source has a source address and there is a first path length between the hub router and the video source. Upon occurrence of a first triggering condition, a short route metric is announced from a supplemental video material server coupled to the hub router. The short route metric causes the hub router to perceive a second path length, between the hub router and the supplemental video material server, as shorter than the first path length. The supplemental video material server has a source address identical to the source address of the video source. Thus, the consumer premises equipment obtains supplemental video material from the supplemental video material server instead of first video material from the video source. Aspects of a system and a supplemental video material server are also disclosed.