Method for transcoding compressed video signals, related apparatus and computer program product therefor

摘要

Transcoder apparatus for transcoding an input video bit-stream (I) having a first encoding profile (e.g. MPEG-2) into an output video bit-stream (O) having a second encoding profile (e.g. H.264), the first encoding profile including motion estimation information, the apparatus including: a front-end (30, 40, 50, 60, 70, 80) for extracting (30) the motion estimation information (110) from the input video bit-stream (I), and a back-end (120, 130, 135, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230) for constructing the output bit-stream (O). The front-end and the back-end of the apparatus are interconnected (e.g. via a buffer 90) to pass the motion estimation information (110) from the front-end on to the back-end, thereby avoiding motion estimation in constructing the output bit-stream (O) at the apparatus back-end.