Removing "red lines" from Objects (Ringing? What is it?)

[Platos]

I have a picture here (uploaded). Look on his shoulder, there is a red line. How can i remove that? So i mean what is this called? Ringing? I tried HQDering and it did not help anything. So i guess its not ringing. Also i tired DeHalo_Alpha, but it does also not work. Anyone has an idea?

[poisondeathray]

Looks like slight color channel misalignment

one way to treat it

mergechroma(awarpsharp2(depth=6))

[Platos]

i tried it with aWarpSharp2 in Hybrid with Planes "chroma only" and a thick on "chroma" and it did not work (vapoursynth).

I tried it with chromashiftSP in hybrid. It goes away, when i use Y=2, but then it also appear red lines on other objects (in the other direction). When i use Y=0.5 it does somehow not mess up too much but also fix the red line above a bit. But it is no real fix, more a workaround.

I also Tried FixChromaBleeding with Shift 0/1 and Strength 1.0 and different Threshold from 0.3-12. More or less it is the same as ChromashiftSP with Y=1. Because you can only increase shift in 1 and not 0.1 there is no comparison with Y=0.5


Do you have any other idea, which i can use in hybrid?

[poisondeathray]

I don't use hybrid (selur can help) but the equivalent in vapoursynth using awarpsharp2 port would look like
https://github.com/dubhater/vapoursynth-awarpsharp2

I used mergechroma helper function in muvsfunc
https://github.com/WolframRhodium/muvsfunc

.
import muvsfunc as muv
.
.
.
## assuming YUV clip
# clip = your source

aws = core.warp.AWarpSharp2(clip, depth=6)
mc = muv.MergeChroma(clip, aws)
mc.set_output()

To apply filter to specific sections, you can use trim to divide into segments, apply filters selectively and splice