1. A filtering system for reducing artifacts in motion video sequences generated by block-based motion-compensated transform coding from a video decoder, comprising: a postprocessor connected to said video decoder, said postprocessor including: an edge orientation detector; a spatial filter bank, said spatial filter bank being configured to receive information from said edge orientation detector, said filter bank comprising a one-dimensional filter utilizing said information to generate spatially filtered video sequences; and a motion-compensated temporal filter, said motion-compensated temporal filter receiving spatially filtered video sequences generated by said spatial filter bank, said motion-compensated temporal filter being configured to generate temporally filtered video sequences from said spatially filtered video sequences; and a frame memory in communication with said spatial filter bank, said frame memory being arranged to receive spatially filtered video sequences from said spatial filter bank.