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Hacking VMAF and VMAF NEG: vulnerability to different preprocessing methods (2107.04510v2)
Published 9 Jul 2021 in cs.MM, cs.CV, and cs.GR
Abstract: Video-quality measurement plays a critical role in the development of video-processing applications. In this paper, we show how video preprocessing can artificially increase the popular quality metric VMAF and its tuning-resistant version, VMAF NEG. We propose a pipeline that tunes processing-algorithm parameters to increase VMAF by up to 218.8%. A subjective comparison revealed that for most preprocessing methods, a video's visual quality drops or stays unchanged. We also show that some preprocessing methods can increase VMAF NEG scores by up to 23.6%.