[HELP] Remove Rainbowing

[RetroHelix]

I used Hybrid for de-interlacing and also did some color conversion with the following settings:



Now I was wondering if I can pimp the output a bit and tried to remove rainbow effects (see the lapel of the right guy and the necktie (green at the end of the screen) of the left guy) but was not able to get a good output:

The effect is even stronger than in the original :\

I tried some suggestions from here (link) but Hqdn3d and/or Degraining was not helping. Honestly I feel a bit lost. I'm just too dumb to alter the parameters of the filters in a meaningful way.

In the original Video you can see heavy rainbowing in the beginning and at 1:30.

Would be nice if someone is able to help me with this. Can this even be removed?


Thank you

[Selur]

If using the vs-mlrt add-on is an option using 1x_BleedOut_Compact_300k_net_g followed by LUTDeRainbow (with chroma threshold = 15). (the order of the filters is important)
I will also try to find a solution without vs-mrt.
LUTDeRainbow with cthresh=20, ythresh=20 + FixChromaBleedingMod(clip, cx=6, cy=6, strength=1.50) does seem to do the job as well and does not tes require vs-mlrt add-on.

Cu Selur

[RetroHelix]

Wow, thank you for the ultra fast reply.

I set LUTDeRainbow and FixChromaBleeding inside Hybrid to the values you posted:



While it seems to be a bit better its still quite noticeable.


Am I missing something?

[Selur]

Your screenshots of the settings are useless (at least to me).
Better either post your script (Vapoursynth Script View) or a debug output. (the script would show me if you use other filters additionally which might influence the effect of the suggested filtering)


is what it looks to me. (unlike you, I didn't disable 'Link UV')
using 1x_BleedOut_Compact_300k_net_g does provide better results here, using 5694 (of the bobbed sample):


If you make screenshots of the content, use the option in vsViewer and also post the frame number that refers to the clip you shared, so I can compare it without having to search for it,..


Cu Selur


Ps.: just thought about boosting the saturation after the rainbowing, for testing how well it worked => looking some more at it

[RetroHelix]

Your screenshots of the settings are useless (at least to me).
Better either post your script (Vapoursynth Script View) or a debug output.

I see. I didn't know that. Here you go: script

is what it looks to me. (unlike you, I didn't disable 'Link UV')

Here is Frame 5675 (almost the same you posted) with Link UV enabled:

using 1x_BleedOut_Compact_300k_net_g  does provide better results here, using 5694 (of the bobbed sample):

I'll try to get this up and running.

[Selur]

try:
DeCross wiht thresholdy:1, noise: 80, margin: 2
+
KNLMeansCL channels: UV, strength: 5
Here is Frame 5674:

with boosting the Saturation after this one can see there is still some left:

...
Increasing the search radius of KNLMeans to 6 helps further and adding LUTDeRainbow before KNLMeans additionally removes more adding SmallDeflcker(agressive with cnr enabled) additionally helps.

Cu Selur

Ps.: Here's a encode I made using: https://pastebin.com/WYYb7kuq