US Patent 7676720 Method and system for program based redundancy

A system that includes: (ii) at least one input port adapted to receive multiple addressable packets that include media content that belong to multiple media streams and to at least one duplicating media stream; (ii) at least one processor adapted to process the multiple addressable packets to determine media stream layer errors to control, and to participate in a replacement of addressable packets that include media content that belong to a defective media stream by addressable packets that belong to a corresponding duplicate stream. A method for providing a video stream over a network, the method includes: (i) receiving a first multi purpose communication protocol stream that includes multiple media streams and receiving at least one duplicate media stream; (ii) detecting a error in a media stream program; and replacing the defective media stream by a duplicate media stream.