How can deblend this ?

[Selur]

for combing handling, I would:

• 'overwrite input scan type to' 'telecine'
  
• under "TIVTC Settings->TFm->Basic->Deinterlacer" select 'QTGMC(preset="fast")' and enable GPU
  

Sadly simply applying BasicVSR++ to the whole frame is too aggressive:

especially notice the edges of the grass.
To lessen the aggresiveness of BasicVSR++, I would move it behind the resize (and resize to a higher resolution) and then apply it masked with EdgeMask (Prewitt), Expand 1, binarize 0,2.
This seems to fix the rainbows and dot craw just fine.
To ideally mask this, one would have to create some custom mask, but I don't know a good way to add this to a gui, that is not really an option.
Here's a suggestion for the clip, where I added DPIR for general denoising: https://pastebin.com/5n9yaM3s

Cu Selur