[MPlayer-users] PSNR Questions

[Ian]

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How can you measure the quality of an encoding by referring only to its 
output?  Surely this is meaningless.  Frequently my encoded stuff shows 
higher PSNR than the source itself.

Wouldn't (eg.) a solid black image have infinite PSNR?

Perhaps output PSNR / input PSNR would mean something (like electronic 
noise figure) but I doubt even that . . .

Comments appreciated!

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Ian Smith
Worst . . . signature . . . ever !

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