Aliasing won't go away

[grezer]

I've tried several filters (mcdaa, Santiag, daa, maa, aaa, ...) but I couldn't find one or a combination of filters that got rid of the aliasing. Can anyone help me figuring out what to do in order to get rid of the aliasing?

Avisynth script:

MPEG2SOURCE("clipbefore_track1_eng.d2v", cpu=6)
QTGMC(Preset="Very Slow", FPSDivisor=2, Lossless=2, Sharpness=0.7, sourcematch=15)
turnleft()
nnedi3(dh=true)
turnright()
spline36resize(768,576)
Crop(2,2,-2,-2)
SMDegrain()
AssumeFPS(25)