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

Overview 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 Rate-Distortion (R-D) optimal mode decision mechanism 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 interpolation and SAD/SSD computation. Based on the selected model, a motion refinement within a distance of pixel is performed after mode decision. Experimental results demonstrate that the method can significantly speed up the spatial resolution reduction process, while achieving high coding efficiency.

Further White Paper Details
Publisher	Institute of Electrical and Electronics Engineers	File Format	PDF
Date Published	June 2006	Downloads	165
Format	White Papers
Topics	Mobile - Wireless Communications

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

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