[MPlayer-users] Is PSNR a definitive way of judging the quality of encoded files?

[Michael Niedermayer]

Hi

On Sat, Sep 24, 2005 at 10:23:23AM -0400, Jason Tackaberry wrote:
[...]
> On playback, I will pass my video through post processing filters that
> inevitably lower PSNR because they make the video further different from
> the original.  (The filter chain I tend to use is -vf
> fspp,noise=8ah:5ah,eq2=1.2:1.1.)  Introducing noise is a common enough

while this set of filters will almost certainly lower PSNR, its not true in
general, postprocessng with a good filter should generally increase PSNR
so while i havnt tried, -vf spp should improve PSNR unless theres some silly
systematic +1 or so error in it ...

[...]

-- 
Michael