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.