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2006
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A Fast Downsizing Video Transcoder for H.264/AVC with Rate-Distortion Optimal Mode Decision

10 years 5 months ago
A Fast Downsizing Video Transcoder for H.264/AVC with Rate-Distortion Optimal Mode Decision
This paper focuses on the mode decision and motion selection problem when H.264/AVC video streams are transcoded in spatial resolution. A fast downsizing transcoding scheme is developed in which a new ratedistortion (R-D) optimal mode decision mechanism is presented for high speed transcoding as well as high coding efficiency. A model for estimating relative prediction errors is applied in this paper, which is free from computation of interpolation and SAD/SSD computation. Based on the selected model, a motion refinement within a distance of 1 pixel is performed after mode decision. Experimental results demonstrate that our method can significantly speed up the spatial resolution reduction process, while achieving high coding efficiency.
Huifeng Shen, Xiaoyan Sun, Feng Wu, Houqiang Li, S
Added 11 Jun 2010
Updated 11 Jun 2010
Type Conference
Year 2006
Where ICMCS
Authors Huifeng Shen, Xiaoyan Sun, Feng Wu, Houqiang Li, Shipeng Li
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