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Old 12th January 2009, 14:50   #867  |  Link
Guest
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Join Date: Jan 2002
Posts: 21,901
It's discussed several times in this thread. Bottom line: speedup will be quite modest on fast systems because decoding requires a small fraction of the total decoding+encoding load. On some slower systems it can give a useful speedup. The motivation for using the GPU is to get correct decoding, access to the PureVideo postprocessor, and support for VC1.
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