Complexity-based adaptive preprocessing for multiple-pass video compression
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United States of America Patent
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Aug 7, 2012
Grant Date -
Aug 14, 2008
app pub date -
Feb 9, 2007
filing date -
Feb 9, 2007
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Abstract
Multiple-pass video encoding systems and techniques are described which utilize statistics taken during a first-pass encoding to create complexity measurements for video data which is to be encoded. By analyzing these complexity measurements, preprocessing decisions, such as, for example, the determination of strength of denoise filters, can be made with greater accuracy. In one implementation, these complexity measurements take the form of calculation of temporal and spatial complexity parameters, which are then used to compute a unified complexity parameter for each group of pictures being encoded.
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