ivtc_txt60fast, giornata storta

# ivtc_txt60fast; Version 0.1; 2014-02-15. Khanattila
# Dependence: nnedi3
# License: GNU GPL version 3.0 or any later version published by the FSF, http://www.fsf.org/
# No warranty, use at your own risk
#
# ivtc_txt60fast (
#   clip c,
#   int field (-1),
#   bool decimate (true)
# )

function ivtc_txt60fast(clip c, int "field", bool "decimate") {
   field = Default(field, -1)
   decimate = Default(decimate, true)  
   Assert(field==-1 || field==0 || field==1, "-1 / 0 / 1")
   field = (field == -1) ? -2 : (field == 0) ? 2 : 3
   AssumeFieldBased(c).nnedi3(field).ConvertFPS ("ntsc_quad")
   decimate ? ChangeFPS("ntsc_film") : last
   AssumeFrameBased()
}