This thread appears doubled. The other one should be deleted.
It could be the movie once was in a hard-telecined stage, has been IVTC'ed by a DEFT machine or whatever, and something went not quite right on the way. If you look *closely* at the 'progressive' sections, you'll find buckloads of residual-combing artifacts ...
I'd push the whole thing through TFM(pp=0), and follow up with
Code:
function daa(clip c) {
nn = c.nnedi3(field=-2)
dbl = merge(selecteven(nn),selectodd(nn))
dblD = mt_makediff(c,dbl,U=3,V=3)
shrpD = mt_makediff(dbl,dbl.removegrain((width(c)>1100) ? 20 : 11),U=3,V=3)
DD = shrpD.repair(dblD,13)
return dbl.mt_adddiff(DD,U=3,V=3) }