x264, x265, libvpx和aomenc在按需自适应流媒体应用中的压缩性能比较

Liwei Guo, J. D. Cock, A. Aaron
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引用次数: 31

摘要

视频压缩标准H.264/AVC于2003年发布,在过去的十年里一直主导着这个行业。在过去的几年中,推出了许多下一代标准/格式,如VP9 (2012), H.265/HEVC(2013)和AV1(2018),都声称比H.264/AVC有了重大改进。在本文中,我们提出了我们的性能评估这些压缩标准。我们的评估使用这些标准的开源编码器实现进行,x264(用于H.264/AVC), x265(用于H.265/HEVC), libvpx(用于VP9)和aomenc(用于AV1)。该过程旨在评估按需自适应流媒体应用程序可实现的压缩效率。报告了两种不同质量指标PSNR和VMAF的结果。我们的结果表明,x265、libvpx和aomenc都比x264实现了显著的压缩效率提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Compression Performance Comparison of x264, x265, libvpx and aomenc for On-Demand Adaptive Streaming Applications
Video compression standard H.264/AVC was released in 2003, and has been dominating the industry for the past decade. Over the last few years, a number of next-generation standards/formats like VP9 (2012), H.265/HEVC (2013) and AV1 (2018) were introduced, all claiming significant improvement over H.264/AVC. In this paper, we present our evaluation of the performance of these compression standards. Our evaluation is conducted using open-source encoder implementations of these standards, x264 (for H.264/AVC), x265 (for H.265/HEVC), libvpx (for VP9) and aomenc (for AV1). The process is designed to evaluate the attainable compression efficiency for on-demand adaptive streaming applications. Results with two different quality metrics, PSNR and VMAF, are reported. Our results reveal that x265, libvpx and aomenc all achieve substantial compression efficiency improvement over x264.
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