[MEncoder-users] broken mencoder options (was: High quality encoding of anime and broken mencoder options)

RC cooleyr at gmail.com
Mon Mar 10 07:25:20 CET 2008


On Sun, 9 Mar 2008 15:32:39 -0300
Jorge Peixoto de Morais Neto <please.no.spam.here at gmail.com> wrote:

> 3.2) If they actually increase the video quality, but diminish PSNR
> (which is possible but unlikely), it should be noted in the
> documentation

PSNR being contrary to perception is NOT unlikely, in fact it's very
common.  See nr, *mask, qns, etc.  Even cmp=2 is a good example, as
it makes live action quite blocky, yet (usually) improves PSNR.

A warning that PSNR isn't perfect would be pointless.  The only
real question is: What gave you the idea that it is?




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