You missed my edit.Yeah, I can calculate PSNR, SNR, SegSNR, and lots of other SNR's on audio too.
But what do they tell us?
There is a world of difference between a video codec whose error pattern is, oh, say +1+1+1+1-1-1-1-1 and one that is just +1 or -1, but the PSNR remains the same.
YES?
We use a raft of technical measures to assess performance (audio or video) , as of course you know. . They help paint an overall picture of performance. That is not suggesting one measurand is the answer to all questions or a single number describes quality.
A few years ago I spent a fascinating day at BBC research and development performing controlled picture quality testing. Part of a complaint about their HD encoder picture quality. The new encoder had specific picture quality issues despite notionally being technically better than the old. Very much an objective technical and controlled subjective exercise.
BBC have an interesting range of papers and articles available
https://www.bbc.co.uk/rd
https://www.bbc.co.uk/rd/publications
https://www.bbc.co.uk/rd/topics/quality
https://www.bbc.co.uk/rd/projects/video-coding
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