Is this ghosting, ringing, oversharpening?

[iseevisions]

This is captured from a PAL VHS with a 1999 analog cable TV program recorded on.

edgeissue.jpg

What is best described as the edge issue?
Also what avisynth/vapoursynth filter/setting is best used to fix this?

[aramkolt]

If your capture setup allows for it, try changing the YC delay. If the chroma isn't aligned with luma exactly (which is actually fairly common) you'll see a single ghost image shifted usually to the right, more noticeable on brighter objects or at edges of high contrast areas. Also, is this a composite or S-Video Capture from the VCR? Not sure if that matters, but you might try capturing whichever you aren't currently capturing and seeing if there's a difference in the ghosting.

[Feedbucket]

Can probably be mitigated with something like vsLGhost.

[lordsmurf]

Quote:

Originally Posted by aramkolt

the chroma isn't aligned with luma exactly

This video still sample here has "halo", or "ringing", not chroma offset.

[iseevisions]

Quote:

Originally Posted by aramkolt

is this a composite or S-Video Capture from the VCR? Not sure if that matters, but you might try capturing whichever you aren't currently capturing and seeing if there's a difference in the ghosting.

Captured over s-video from a JVC HR S6800EH VCR to a matrox MXO2 mini.
I could also test from composite to see..., or another VCR perhaps.

Quote:

Originally Posted by Feedbucket

vsLGhost

Yes I was already testing with several filters/settings like:

clip = haf. MCTemporalDenoise(clip,settings="low", edgeclean=True, stabilize=False, maxr=2)
clip = haf.DeHalo_alpha(clip)
clip = core.lghost.LGhost(clip, mode=1, shift=6, intensity=-10)
clip = haf.YAHR(clip)

But I can't get it to go away...

Attached a short sample video for anyone interested to play with:

[Selur]

You might also want to try, BindDeHalo3 (and adjust the settings)

[Feedbucket]

How about

mode=1, shift=2, intensity=-80

for LGhost? Softens the image but my understanding is oversharpening is what causes this in the first place.

[iseevisions]

Yes, that seems to make it less noticeable.

Not sure where the oversharpening comes from.. could be recorded that way back in the day or a problem with the VCR.
Have to change hardware and recapture to find out...