Method and apparatus for transcoding a digitally compressed high definition television bitstream to a standard definition television bitstream

摘要

A method and apparatus for transcoding macroblocks of a high definition television signal to co-sited macroblocks of a standard definition television signal wherein SD macroblocks are derived directly from co-sited HD macroblocks, i.e. without having to compute the SD macroblock information from its corresponding SD image sequence.