The present disclosure relates to a method and a system for transcoding a digital video. The method and system includes a decoder, a hierarchical motion sampling and re-estimation engine, a resizing engine and an encoder. The decoder extracts a plurality of pre-determined decoder information pertaining to each macroblock of a plurality of macroblocks of each of a decoded frame of a plurality of decoded frames of the digital video. The decoder information includes syntax elements. The hierarchical motion sampling and re-estimation engine evaluates hierarchically the syntax elements pertaining to the each macroblock of the plurality of macroblocks of the plurality of decoded frames. The resizing engine resizes each of the macroblock of the plurality of macroblocks based on evaluated hierarchical syntax elements. The encoder encodes each of re-sized macroblock based on the evaluated hierarchical syntax elements.