Luma-mask

ffmpegsource2("filtrado_lossless.mkv")

#SMDegrain(tr=3,thsad=160,blksize=8,overlap=2)

Spline36Resize(1280,688) # encode mais rápido

source=last

bright = source.dfttest(sigma = 3, tbsize=3)
medium = source.dfttest(sigma = 1, tbsize=3)
dark   = source.dfttest(sigma = 0.5, tbsize=3)

th_low  = 20
th_med  = 50
th_high = 100

mmask = medium.levels(th_med, 1.0, th_high, 255, 0, false)
dmask = medium.levels(th_low, 1.0, th_med,  255, 0, false)

bright.mt_merge(medium, mmask, U=3, V=3, luma=true)
 \  .mt_merge(dark, dmask, U=3, V=3, luma=true)

SelectRangeEvery(2000,100) # encode mais rápido