Thank you PyRoMaNiA, I got a bit smarter Before you answered me I tried this script

ConvertToYUY2()
LegalClip()
GripCrop( width=544, height=480, overscan=0 )
GripSize(resizer="BicubicResize")
STMedianFilter(10, 30, 0, 0, 10, 30)
SpaceDust()
unfilter(50,50)
temporalsmoother(1,2)
mergechroma(blur(1.5)
mergeluma(blur(0.3))
DctFilter(1,1,1,1,1,.5,.5,0)
GripBorders()
Letterbox(0,0,32,32)
LegalClip()

Will overscan=0 do anything

//Wolfi

No, you might as well leave it out completely.
I don't think it does anything...