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- W4308238249 abstract "High Efficiency Video Coding (HEVC) sets the scene for economic video transmission and storage, but its inherent computational complexity calls for efficient parallelization techniques. This paper introduces and compares three different parallelization strategies for HEVC encoding on multi-computer systems: 1) spatial parallelization scheme, where input video frames are divided into slices and distributed among available computers; 2) temporal parallelization scheme, where input video is distributed among computers in groups of consecutive frames; 3) spatio-temporal parallelization scheme that combines the proposed spatial and temporal approaches. All these three schemes were benchmarked as part of the practical Kvazaar open-source HEVC encoder. Our experimental results on 2–5 computer configurations show that using the spatial scheme gives 1.65×–2.90× speedup at the cost of 4.16%–13.09% bitrate loss over a single-computer setup. The respective speedup with temporal parallelization is 1.86×–3.26× without any coding overhead. The spatio-temporal scheme with 2 slices was shown to offer the best load-balancing with 1.81×–3.55× speedups and a constant coding loss of 4.16%." @default.
- W4308238249 created "2022-11-09" @default.
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- W4308238249 date "2022-10-16" @default.
- W4308238249 modified "2023-10-14" @default.
- W4308238249 title "Spatio-Temporal Parallelization Scheme for HEVC Encoding on Multi-Computer Systems" @default.
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- W4308238249 doi "https://doi.org/10.1109/icip46576.2022.9897316" @default.
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