Distributed memory parallel approaches for HEVC encoder
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- 作者：H. Migallón ; V. Galiano ; P. Piñol ; O. López-Granado…
- 关键词：Parallel algorithms ; Video coding ; HEVC ; Performance ; Distributed memory ; Message passing
- 刊名：The Journal of Supercomputing
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：73
- 期：1
- 页码：164-175
- 全文大小：
- 刊物类别：Computer Science
- 刊物主题：Programming Languages, Compilers, Interpreters; Processor Architectures; Computer Science, general;
- 出版者：Springer US
- ISSN：1573-0484
- 卷排序：73
文摘
The HEVC video coding standard launched on 2013, is able to reduce to the half, on average, the bit stream size produced by H.264/AVC encoder at the same video quality, but it requires nearly 70 % more time than H.264/AVC to encode a video sequence. In this paper we propose several parallelization approaches to the HEVC encoder. Our proposals, for distributed memory platforms, work at a coarse grain level parallelization, being one group of pictures (GOP) the basic structure. These approaches encode simultaneously several GOPs. To obtain good parallel performance, a right GOP conformation and distribution should be applied.