A VLC/FLC data partitioning scheme for MPEG-4

Compressed video bit stream is very sensitive to transmission errors. There exist many error-resilient techniques that can significantly improve the reconstructed video quality by reducing the spatiotemporal error propagation. In this paper, an error-resilient coding scheme that can decrease the spatial error propagation with little overhead is proposed. It disables intra AC prediction and groups appropriate fixed length coded (FLC) syntaxes in a video packet (or slice) together to form a new partition. With intra AC prediction disables, errors occurred in these FLC syntaxes do not cause spatial error propagation. We evaluate the efficiency of the error-resilient coding scheme by comparing the reconstructed PSNR of the proposed coding scheme with that of the MPEG-4 coding scheme over the AWGN channel and the Rayleigh channel.