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explain the return values of psnr for joe avarage

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(yes, i know it's not really an explanation, but more would
require mathematics :)


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9483 b3059339-0415-0410-9bf9-f77b7e298cf2
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attila 2003-02-22 18:41:31 +00:00
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DOCS/en/mplayer.1
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@ -3034,6 +3034,7 @@ Note: this has a significant effect on the speed
.IPs psnr
print the psnr (peak signal to noise ratio) for the whole video after encoding
and store the per frame psnr in a file with name like 'psnr_012345.log'.
Return values are in dB (decibel), the higher the better.
.IPs mpeg_quant
use MPEG quantizers instead of H.263.
(default: disabled) (i.e.\& use H.263 quantizers)