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Old 25th May 2003, 20:34   #14  |  Link
mf
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Join Date: Jan 2002
Posts: 1,729
Quote:
Originally posted by crusty
Question to developers:
Is mosquito noise around sharp edges created by using too high frequencies for these edges?
I can imagine a very bright thin line getting a higher frequency than a very bright thick line, ergo the macroblock with a thin line getting additional thin lines in decoding because of the higher frequency used.
Is this correct or is this just plain nonsense?
If it's correct, then I assume that some form of postprocessing filter could be made to detect this type of noise and remove it, not just on Xvid, but on all Mpeg4.
Hah! finally I can engage in this conversation as well. Ringing around sharp edges is created by dropping coefficients.
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