Quote:
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The leader in this comparison is x264—its quality difference (according to the SSIM metric) could be explained by the special encoding option ("tune-SSIM"). Interestingly, using the PSNR metric for MainConcept yielded results comparable with or better than those of x264. This means that no encoder can achieve the best results for both SSIM and PSNR when using the same parameters.
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Of course. The requirements for optimizing for each of those metrics (or visual quality for that matter) are not orthogonal. Why omit that x264 can also be tuned for PSNR?
I'm also missing a downloadable PDF version of the free report.