Lineart effect?

i wondering if knew how sort of lineart effects creator uses in "after" shot. 

 

 

full video here more before , after shots: making of 「lovely girl on rampage 」 - youtube

 

as can see, looks converted original anime footage lineart.  i've tried using find edge , threshold no avail.  ahead of time!

from examining reference, fine lines, clean appearance, difference between them (the left richer , has more elements, more shadows , highlights), appears these 2 different renders original art. meaning - there no effect here. software in these images created in used export 2 different files: composite (the left), , line art in red (the right). it's matter of placing 1 on top of other , using matte reveal either mask or effect.

 

having said that, can come pretty close in cases. take @ these settings:

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