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- W2005471796 abstract "As emerging video coding standards, e.g. H.264, aim at high-quality video contents at low bit-rates, the encoding and decoding processes require much more computation than most existing standards do. This paper analyzes software implementation of a real-time H.264 decoder on general-purpose processors with media instructions. Specifically, we discuss how to optimize the speed of H.264 decoders on Intel Pentium 4 processors. This paper first analyzes the reference implementation to identify the time-consuming modules. Our study shows that a number of components, e.g., motion compensation and inverse integer transform, are the most time-consuming modules in the H.264 decoder. Second, we present a list of performance optimization methods using media instructions to improve the efficiency of these modules. After appropriate optimizations, the decoder speed improved by more than 3x---it can decode a 720×480 resolution video sequence at 48 frames per second on 2.4GHz Intel Pentium 4 processors compared to reference software’s 12 frames per second. The optimization techniques demonstrated in this paper can also be applied to other video/image processing applications. Additionally, after presenting detailed application behavior on general-purpose processors, this paper discusses a few recommendations on how to design future efficient/powerful video/image applications/standards with given hardware implications." @default.
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- W2005471796 date "2003-05-07" @default.
- W2005471796 modified "2023-10-16" @default.
- W2005471796 title "Implementation of H.264 decoder on general-purpose processors with media instructions" @default.
- W2005471796 cites W2144625860 @default.
- W2005471796 doi "https://doi.org/10.1117/12.484746" @default.
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