[HELP] 80s movie with video inserts

[Miranda]

The special effects for this early 1980's movie were created in a video suite and then edited into the 35mm feature. As you can see, there is baked-in interlacing and awful chroma noise. Any suggestions? 

I'm not so worried about the combing, but I need to retain as much of the sharpness as possible whilst removing the chroma noise. I've tried most of the de-noise filters but a lot of the chroma noise remains with some loss of detail.

Sample clip

[Selur]

About the combing: simple deinterlacing works fine.
About the clock skew issue which caused the upper half flickering: I'm pretty sure I have suggested something for this clip before.
About the chroma:
Is that really chroma noise?
Adding more blue to the color, it looks to yellow (side note: I am !really! bad when it comes to color grading)

clip = color.RGBAdjust(rgb=clip, b=1.200, rg=0.850)

and shifting the luma ranges:

# adjusting color space from YUV422P10 to RGB30 for vsLevels
clip = core.resize.Bicubic(clip=clip, format=vs.RGB30, matrix_in_s="470bg", range_s="limited")
# adjusting color using Levels on RGB30 (10 bit)
clip = core.std.Levels(clip=clip, min_in=0, max_in=872, min_out=64, max_out=940)

It doesn't look so bad.

(AutoWhite or GrayWorld will do similar)

You could also try some DeRainbow and denoising and only use the chroma adjustment of the denoising (using Merge Y=0,U=1,Y=1)
HQDN3D also is usually works fine with chroma noise (simply set spatial and temporal luma to 0)
If you have an NVIDA card and the torch addon is installed using BasicVSR++ limited to chroma (using Merge Y=0,U=1,Y=1) can sharpen chroma.

(just to sharpen the chroma aWarpSharp2 applied to and limited to chroma also can help)

Hope this helps to get you started.

Cu Selur

[Miranda]

Strange - wrong clip. Can you re-click the link? It should be a crazy flying head.

https://drive.google.com/file/d/1Z7SgiIW...GjJCm/view

[Selur]

can't access the file

[Miranda]

Link

[Selur]

Download works.

[Selur]

Seems like someone messed up mixing interlaced and progressive content and then resized
If you just want to filter the chroma:
a. set 'Split Compare View' to 'Split YUV' this way you see in the lower row what happens to the chroma
b. use try different denoisers and restrict their effect to chroma only (Merge Y=0;U=V=1)
Here's an example of MCTemporalDenoise(settings="very high") restricted to chroma:

The Y plane is untouched and just the other two got the filter effect.
If you want to remove fines chroma noise, use a degrain instead of a denoise filter.

Not really sure what you are aiming for, but maybe using CAS(0.7)+SpotLess(tr=3) (!in that order!) does what you want

Cu Selur

[Miranda]

Thank you, will try tomorrow.

[Miranda]

Where can I find this setting: 

set 'Split Compare View' to 'Split YUV'.

I'll try this: MCTemporalDenoise(settings="very high") restricted to chroma:

But I don't see a "very high" setting?

[Selur]

see:
       

Cu Selur