Efficient Motion-Vector Reusing on MPEG-2 to H. 264 Transcoding
Seulki Shin, Jitae Shin · ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications · 2007
In this paper, we propose an efficient Motion Vector (MV) reusing algorithm on transcoding from MPEG-2 to H.264. Basically on transcoding, MVs derived from the input video stream can be a good reference to estimate MVs for the output. So, we propose the MV refinement algorithm based on diamond search algorithm to get the best MV for the output. At the result, we improve computational complexity while the video quality is degraded just a little with the consideration of tremendous rate reduction from 2 Mbps in MPEG-2 to several hundred kbps in H.264 streams.