phædrus
9th January 2008, 06:09
I am not finding much macroblocking in caps from NBC, CBS, ABC, Fox, or the CW network -- maybe a bit from the latter because the local CW affiliate is running 3 channels on one transport stream and the 1080i one gets less data allocated to it than it should . Public Broadcasting is probably the worst. Our local station broadcasts in 1080i, and for whatever reason, some of the older documentaries they run suffer from unsightly blocking in high-motion scenes.
I don't have a file handy to look at, but I assume these are 16x16 blocks. Or would they be 32x32 as it is HD? I'm not sure it matters.
Because I don't understand the algorithms by which de-blocking filters work, I will ask for suggestions to try for avisynth filtering this kind of macroblocking in the source material. Ideally I would like something that will not soften the image in low/medium-motion scenes which are not blocky.
This thread (http://forum.doom9.org/archive/index.php/t-108511.html) recommends Deblock_QED, but the user in that thread had some really bad source material, I gather. I need a lighter touch, and I would need some suggestions for parameters to use, I think.
I don't have a file handy to look at, but I assume these are 16x16 blocks. Or would they be 32x32 as it is HD? I'm not sure it matters.
Because I don't understand the algorithms by which de-blocking filters work, I will ask for suggestions to try for avisynth filtering this kind of macroblocking in the source material. Ideally I would like something that will not soften the image in low/medium-motion scenes which are not blocky.
This thread (http://forum.doom9.org/archive/index.php/t-108511.html) recommends Deblock_QED, but the user in that thread had some really bad source material, I gather. I need a lighter touch, and I would need some suggestions for parameters to use, I think.