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| x264 Fast Mode Selection Based on Hierarchical Decision |
| LIU Shuo,SONG Li，YU Songyu |
| (Institute of Image Communication and Information Processing, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract This paper carries out research on the highly optimized mode decision algorithm of x264 software and accurately pins out its redundant points. The mode selection process is reorganized hierarchically. Auxiliary inter modes’ invalidating condition and main inter modes’ validating condition are proposed.New mode selection algorithm based on them is designed. According to the experimental results, the new algorithm brings remarkable speed gain for both P and B slices.
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Received: 24 March 2009
Published: 26 February 2010
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