Scalable and robust videoconference codec

This paper proposes and implements a system to transmit in real-time slow video signals over the public network. The proposed codec is based on a multiple description approach whose advantage is an intrinsic robustness to the packet losses, as the simulation results have proved. This coding approach is important also for end user scalability since each device can decide the information to receive according to the display resolution and the connecting link bandwidth. The proposed system results are very suitable not only for IP networks but also for every packet network like the next generation mobile systems.