Filter or combination for remove QUILTING

[yup]

Hi people! Recently I begun make conversion from DVD to MPEG-2. I use Avisynth as frameserver and CCE 2.62 as encoder. I try some filter for Avisynth and get satisfied results, but sometimes I can net remove quilting artefascts (same problem in DVD to MPEG-4 conversion). May be need combined some filters or important sequence applying filters. If any try solve this problem let me know.
With kind regards yup.

[sh0dan]

How does this artifact look like?

Screenshots/testsequence would help.

[yup]

Hi sh0dan! This artifact look like many step on horizontal luma edges (sometime chroma edges), step has height one line. Horizontal edges have small angle, little than 30 grad. I read about DV format and this artifact origin is DCT compression with loss (ordinary DV get 5:1 compression). Term quilting I find in one manual on DV format.
yup.

[sh0dan]

Oh - it's most commonly referred to as "blocking" on this forum. (Info found on this site (http://www.adamwilt.com/pix-artifacts.html) )

You should try some smoothers.

BlindPP from the MPEG2DEC3 plugin should be able to help you.
Try BlindPP(3,4,ipp=true). Use ipp=false if your video is progessive. Look through the doc for more adjustments.

Convolution3d(preset="movieHQ") should also help.

[yup]

Thank You sh0dan! I try.

[yup]

Hi sh0dan BlindPP function (MPEG2Dec3 plugin) need YV12 input. It is O'k for DVD to DivX or XviD conversion, but for DV to MPEG-2 not very. DV decoder use YUY2 colorspace and many MPEG-2 encoder need YUY2 input. I need to colorspace conversion YUY2->YV12->YUY2. May be exist other filter for YUY2 colospace.
With kind regards yup.

[sh0dan]

ConvertToYV12(interlaced=true)
BlindPP
ConvertToYUY2(interlaced=true)

Should do it for testing.