[HELP] Telecine Source in MacOS Not Encoding

[Selur]

I believe my issue is similar to this case you looked at a number of years back, did anything ever come of this?

I frequently added workarounds for new makemkv and mediainfo changes.

If you look at the Vapoursynth Preview, does it show the correct / expected number of frames?
(I suspect the old versions of the source filter can't properly handle your source.)
Also try, whether it makes a difference if you enable "Config->Input->Decoding->CFR Output" (probably not, but it's work a try).

Cu Selur