Malaysian Journal of Computer Science (ISSN 0127-9084)
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Title:New Domain Decomposition Method For Quality-Aware Parallel H.264 Video Coding
Auhtor(s): Mohammed Faiz Aboalmaaly,Rosni Abdullah ,Ali Kattan,
Journal:Malaysian Journal of Computer Science (ISSN 0127-9084)
Volume:27, No 3
Keywords:Video bit rate, video compression efficiency, speed-up, OpenMP, 2D domain decomposition method, parallel scalability, parallel impact
Abstract:In this paper, we present a new parallel granularity called “tiling” to parallelize the H.264 codec. The new parallel granularity, which has the same granularity level as the parallel slice-level H.264 codec, is based on decomposing the entire video frame into tiles by utilizing a new inherently parallel 2D domain decomposition method. To assess the proposed approach, its parallel scalability, bit rate, and parallel impact on visual quality (peak signal-to-noise ratio) are compared with those of other approaches. Empirical results show significant improvements in encoding time as compared to the serial and the parallel slice-level approaches. In terms of peak signal-to-noise ratio and bit rate, certain results improved, a few were comparable, while a few were discouraging, when compared to the results of the other approaches. However, addressing the limitations of the proposed method is highlighted as future work.

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