I'm doing captures of Fawlty Towers with a PVR-250 as NTSC 720x480. The quality is marginal and it is interlaced.

Can the following AVS be enhanced? I am creating interlaced half DVD at CQ80 through TMPGEnc.
LoadPlugin("C:\video\Filters\kerneldeint.dll")
LoadPlugin("C:\video\Filters\RemoveGrain.dll")
LoadPlugin("C:\video\Filters\STMedianFilter.dll")
LoadPlugin("C:\video\Filters\Cnr2.dll")
Mpeg2Source("H:\ft\ft.d2v",idct=7)
bob(0,0.5)
RemoveGrain(mode=2)
Cnr2()
STMedianFilter(3, 3, 1, 1 )
assumebff()
separatefields().selectevery(4,1,2).weave()
KernelBob(order=1,sharp=true,threshold=7)
AssumeFrameBased()
LanczosResize(352,480,8,0,704,480)
AssumeBFF()
ConvertToRGB24() # For TMPGEnc or VFAPI
SeparateFields()
SelectEvery(4,1,2) # SelectEvery(4,0,3) for bottom field first video
Weave()
LetterBox(16, 16, 16, 16)