[MPlayer-users] Getting rid of banding/blocking artifacts in dark areas

John Stebbins stebbins at jetheaddev.com
Sun Mar 2 17:50:55 CET 2008

Ulrich Lukas wrote:
> Hi,
> provided I have to make do with less-than-perfect encoded video material
> (MPEG-4 ASP), is there a way to significantly reduce blocking and
> banding artifacts especially in dark areas?
> I've tried -vf pp=aq, -vf spp, -vf uspp etc. with various quality
> settings, but the result wasn't really different from unfiltered playback.
I've had good results obscuring this kind of artifact by adding a small 
amount of noise with:
-vf noise=2t:2t

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