I've been using the Camcorder Color Denoise filter (CCD) on most of my VHS captures. I found no better filter than this one to remove the chroma smear/trail that occurs on hockey and football games (on fast moving players).
However I came up with a situation where the filter is coloring something that should remain grey. I've included 2 videos, one without applying CCD and the other one with the filter applied. It's an hockey game, and the arena lighting is producing a shadow on the ice just below the board. Because the bottom of the boards are yellow, CCD is also coloring the shadow yellow, even when using the filter lightly (the pictures show where the issue is).
I've been using CCD on Virtualdub. I have not found a Avisynth filter that could remove the chroma smear/trail created by the moving players as good as CCD does it. So my question is, would it be possible to create a mask in order to apply CCD only on the non-yellowlish part of the chroma ?
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Sorry, but I can't see a significant difference between your 2 files, nor do I find your .png frames in the clips.
You could however apply MCDegrainSharp() on the fields which reduces both the color noise and the color smearing.
In avisynth something like
AVISource("Without CCD.avi") converttoYUY2(interlaced=true) #or converttoYV12(interlaced=true) assumeTFF() e=separatefields().selecteven().MCDegrainSharp() o=separatefields().selectodd().MCDegrainSharp() interleave(e,o).weave()
Last edited by Sharc; 20th Dec 2020 at 07:23.
You're running CCD on interlaced video? I don't think it supports that. And why are your videos RGB, not YUV?
Virtualdub filters other than CCD and Neatvideo, but is it possible to properly deinterlace on Virtualdub (like using separatefields() on Avisynth) before applying a filter and then re-interlace ? If not, how can I apply CCD correctly using Virtualdub ?
As for RGB, I always convert to RGB at the end of my Avisynth script. It's probably not required anymore, but I remember reading that some Virtualdub filters had issues with YUV videos, so I convert to RGB before doing anything in Virtualdub.
I think I found a solution...
I imported CCD into Avisynth. I tried deinterlacing before applying the filter, but it created other issues with the shadow. Then, I found out a new version of CCD had been released a few months ago (I was using version 1.6, now it's 1.9).
I got he newest version from the developer's website :
LoadVirtualDubPlugin("C:\Program Files\VirtualDub\plugins\ccd_32bit.vdf", "CCD", 0) AVISource("Without CCD.avi") assumeTFF() e=separatefields().selecteven().CCD(30,0) o=separatefields().selectodd().CCD(30,0) interleave(e,o).weave()
Also, I read that CCD was designed to work with RGB32.
Thank you guys for guiding me in the right direction.
Last edited by rds11; 21st Dec 2020 at 14:14.