@Hi All,

I'm re-encoding very high quality mpeg-2's (480x480) to LBR (352x240)
and would like to test "Undot" or some filter that effect Gibbs noise.
Some have mentioned "UnFilter" as also having effect on Gibbs. I
know there will be loss when re-encoding, but I've converted SVCD's
before and they came out very good. I want to play with Gibbs noise
while I'm doing this.

-black prince

hi black prince,

I've tried unfilter(-15,-15) with average results. I wanted to try undot but I couldn't find avisynth 2.05 alpha On sources that are very mosquitoey I use fluxsmooth() sometimes in combination with temporal smoother (2,2) :twirl: I can't wait till SansGrip comes up with a Gibbs filter because that mosquito noise bugs me more than the dct blocks do

Hey rendalunit,

rendalunit wrote: Only avisynth 2.5 alpha supports "UnDot". Seems if your source
is clean (i.e. DVD) then the encoder is causing Gibbs noise and can't
be corrected with a filter until after encoding. I wanted to try re-encoding
from a high resolution mpeg-1 or mpeg-2 with "UnDot" and see how
much it would correct the problem. I too have had trouble finding
avisynth 2.5 alpha. I'll try to pm SansGrip on where to find it.
A version of "UnDot" that works with avisynth 2.07 would be nice

-black prince

Hey Ren,

I've found avisynth 2.5 alpha at this link:

http://cultact-server.novi.dk/kpo/av...nth_alpha.html

Let me know how you make out with "UnDot".

-black prince