A method selects an optimal coding mode for each macroblock in a video. Each macroblock can be coded according a number of candidate coding modes. A difference between an input macroblock and a predicted macroblock is determined in a transform-domain. The difference is quantized to yield a quantized...http://www.google.com/patents/US20050276493?utm_source=gb-gplus-sharePatent US20050276493 - Selecting macroblock coding modes for video encoding
