After some work and research, I finished an avisynth script that produced rather good results, all things considered.
But there's something that's keeping the output video from being perfect: the final aspect ratio.
Quote:
LWlibavVideoSource("G:\WORKING\era uma vez a vida.mkv")
AssumeFPS(25)
AssumeTFF()
#QTGMC( Preset= "Slower" )
QTGMC( Preset="Slower", MatchPreset="Slower", MatchPreset2="Slower", SourceMatch=3, Sharpness=0.9, TR2=2, Lossless=2 )
SelectEven()
Overlay(GreyScale(last), last, x=-3, mode="chroma")
LanczosResize(768,576)
Crop(20, 4, -12, -8)
hqdn3d(ls=1.0, cs=1.0, lt=6.0, ct=1.0, restart=7)
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As you can see, I tried to transform the original square-pixel 720x576 resolution into the resolution that simulates the original PAL PAR, ie, 768x567. I then cropped as needed, including at the bottom due to it being a tape recording. Cropping after the resize shouldn't change the PAR, right?
Anyway, for some reason, the circles and spheres in the output video didn't turn out perfect.
Here are the original video and the output test.
original piece:
https://drive.google.com/file/d/11kF...ew?usp=sharing
output:
https://drive.google.com/file/d/1SVp...ew?usp=sharing
What am I missing?