A cooling system for an appliance includes an evaporator stage, a compressor stage coupled to the evaporator stage and a condenser stage coupled to the compressor stage. Video frames in a segment are analyzed to determine intensity, contrast, and motion values for the frames and their segments. A decoding unitthread is advantageously equipped to determine whether a slice has decoding dependency, if so, whether the portion of the video on which a slice’s decoding is dependent hashave been decoded.