Do you have any examples of how your process looks on episodes from Seasons 5+? The video quality of the DVDs gets much better in the later seasons so the results tend to be better.

By the way, what’s your methodology for conforming to 23.976fps? I am working off of the NTSC DVDs rather than the PAL ones, but I’ve found I ultimately have the most success retaining the variable framerate to allow the 29.97 sections to remain at that while the unCGI’d film stuff is at 23.976. Kodi copes with it just fine, in my experience, so no need for CFR for my purposes. Joel Hruska at ExtremeTech spent a long while trying to get the series to a constant 23.976fps but his avisynth script is a) time-consuming and b) imperfect, producing rippling, hence I stuck with VFR.

I’d also be interested to know about any anti-rainbowing you did; and whether or not you’ve found any good way to combat the smearing often apparent on faces in the early and middle seasons.