[MPlayer-users] PSNR Questions

Ian the.pond at dsl.pipex.com
Sat Feb 15 15:57:15 CET 2003


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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!

- -- 
- ------------------------------------------------------------------------
begin  GPG D694 FB76 12FC 94A7 4557  9951 8734 A4AC 7AA4 141E
Ian Smith
Worst . . . signature . . . ever !

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.1 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQE+TlVShzSkrHqkFB4RArNgAJ0f6QVoRZyK+aN7DjTL5DHsVl6nBwCgqHhB
YQyOA+YhPOZZpoIzXvHB67U=
=rgbJ
-----END PGP SIGNATURE-----



More information about the MPlayer-users mailing list