[KF]

Wilbert, this was just a quick test

scripts used:

Wilbert's
=========
loadplugin("C:\Program Files\AviSynth 2.5\plugins\ReInterpolate420.dll")
avisource("myfile.avi").info()
ConvertToYUY2()
ReInterpolate420(interlaced=true)

Scharfis_Brain's
================
function reinterpolate420(clip x)
{
u=x.utoy()
v=x.vtoy()

u=u.separatefields().separatefields().selectevery(4,1,2).tomsmocomp(1,-1,0).assumefieldbased().weave()
v=v.separatefields().separatefields().selectevery(4,1,2).tomsmocomp(1,-1,0).assumefieldbased().weave()

ytouv(u,v,x)
}

loadplugin("C:\Program Files\AviSynth 2.5\plugins\tomsmocomp.dll")

avisource("myfile.avi").info()
ConvertToYUY2()
reinterpolate420()

************************************************
time take by cce 2.67

time taken: 1:59:36 scharfis_brain

time taken: 1:53:43 wilbert

Original File size 96,503,820 bytes

Attached zipfile contains snapshots of the same frame.
Strange observations if you examine the yellow text.
Scharfis_Brain's method causes the colour of the text to be less by one pixel whilst Wilbert's method causes the colour to extend out of the text boundaries by one pixel.
I've had to crop the images in order to meet the upload file size restrictions.
But the portion shows what I mean.