26-6 MPEG-2ビデオからMPEG-1ビデオへの高速トランス符号化の検討

抄録

In this paper, we study video format conversion method from MPEG-2 to MPEG-1. We have performed several transcoding experiments using direct motion vector conversion from MPEG-2 to MPEG-1, including a new proposal with simplified calculation. By adopting these vectors, MPEG-2 video is transcoded to MPEG-1 video without motion estimation. As a result, processing time for MPEG-1 re-encoding ca be reduced by less than half.