@onesloth
Yes, stab() or any other stabilizing filter alone will not work on this, nor does any temporal smoother. And I think this flickering problem doesn't have anything to do with IVTC, since most old anime in the 90s were like that.
@toof
I change the strength to 1 in that deflickering script, and it works fine in all three samples now, yay. One minor problem is the small flickering on the top and bottom of the frame sometime, but I can live with that. I'll put the script here just for future references:
Code:
stab(1,10,10)
temporaldegrain(gpu=true)
########################################################
strength = 1
mt_merge(last,
\ last.MVDegrainMulti(last.FFT3Dgpu(sigma=strength*2,plane=4,bw=32,bh=32,ow=8,oh=8,bt=3).MVanalyseMulti(refframes=strength,blksize=16,overlap=4,idx=1),refframes=strength,thSAD=strength*200,idx=1),
\ last.mt_edge("min/max").removegrain(19),
\ U=3,V=3)
#########################################################
#some cropping and resizing