A New Multiple Description Motion Compensation Video Coding Scheme for H.264

Multiple description coding encodes a source for transmission over a communication system with multiple channels, which will generate two or more related bitstreams. When errors occur, the corrupted (lost) data can be recovered from the other bitstreams. In this study, a new multiple description motion compensation (MDMC) video coding scheme for lossy packet networks is proposed. In the proposed scheme, two descriptions are generated, a second-order motion compensation predictor is employed in the central encoding loop, multiple previous video frames are used to predict the current video frame, and a new mismatch signal coding method is employed to provide a better reconstructed performance by reducing the quantization error. Additionally, a proposed error concealment scheme at the decoder is used to reconstruct the corrupted macroblocks (MBs). Based on the simulation results obtained in this study, the performance of the proposed MDMC coding scheme is better than that of the two comparison MDMC schemes.