# mfRainbow by mf
# Derainbows according to the same principle as AntiFlicker.
# Definitely slower, but possibly (untested) higher quality.
#
# I don't claim copyright but I ask you to treat my script
# fairly.
#
# Happy slow encoding ^^.
#

function mfRainbow(clip input, string "mode", float "clipstren", \
int "strength", bool "post") {

mode 	  = Default(mode, "slowest") # processing speed, slow-slower-slowest
strength  = Default(strength, 255)   # processing strength, 0-255
clipstren = Default(clipstren, 5.0)  # value clipping strength, 0.0-10.0
post      = Default(post, true)      # spatial postprocessing on/off

inputrgb = input.ConvertToRGB32()

edgemask = input.EdgeMask(0, "sobel").Inflate().GreyScale() .\
Levels(0, clipstren, 255, 0, 255).ConvertToRGB32()

derainbow = (mode == "slow" ? input.Deen("a3d",4,0,40,50) : \
(mode == "slower" ? input.Deen("a3d",4,0,20,50).Deen("a3d",4,0,20,50) : \
(mode == "slowest" ? input.Deen("a3d",4,0,15,50).Deen("a3d",4,0,15,50) .\
Deen("a3d",4,0,15,50).Deen("a3d",4,0,15,50) : Assert(false, "available modes: \
slow, slower, slowest")))).ConvertToRGB32()

maskedrainbow = Mask(derainbow, edgemask)
edgerainbow = Layer(inputrgb, maskedrainbow, "add", strength)


semifinal = input.MergeChroma(edgerainbow.ConvertToYV12())
blah = semifinal.MSmooth() # cause of a weird argument error
final = semifinal.MergeChroma(blah)

return post ? final : semifinal

}