Quote:
Originally Posted by Stereodude
Thanks for the numbers and additional insight. What's the psnr for lossless compression / what's the theoretical maximum? Is it infinite / undefined or is there a max value?
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Yes infinity . It's a log scale
PSNR has various issues with being used as a "quality" measurement, but one thing everyone will agree on - is that it's good at testing lossless vs. not
In the higher bitrate ranges, such as with these production codecs - the "subjectively" influenced metrics are less useful . For example, VMAF wasn't even trained at those bitrates (much lower delivery bitrates), and it cannot even distinguish accurately between mathematically lossless vs. not