To revisit Post 47, I just wanted to include my paint program settings for the optional clean-up with which I started this demonstration. Keep in mind there are many ways to achieve this same clean-up, if one's goal is more than just putting a colorized movie (videotape, DVD) into a higher definition one (HD, UHD).

First, I took the YouTube SD video (originally from videotape?) and color-temperature processed it to remove the "green fog" (yellow shows those values changed from the program's defaults):

Next, I used the HSL color-wheel to strengthen the colors and normalize the hues, by eye (yes, I am shooting for "Santa's" red suit, and the skin-tones in general):

Due to YouTube compression (?), this resulted in a splotch of aqua showing through on the jacket. For this particular problem (I wouldn't expect it from a direct videotape capture or a DVD rip), I added a lowered color strength for just the Blue color-wheel segment and readjusted it's hue to match the rest of the jacket:

It looks pretty good and, since colorization is a pretty flat application of color, these settings should work across the entire movie.

Off-hand, I don't know the one-to-one translation from paint program to Avisynth for these settings without devoting more time than I have for this. Instead, let's just say I'm a purist and I simply want to transfer lo-rez colorization to hi-rez luminance for a colorized high-definition (Blu-ray), as-is. I'll restart from there in the next post.