Need some best filters for resize 720x576 to 352x288

[toysoldier]

I have try some resize filters combined in virtualdub,
but no one is best, the inclined lines or curve edge has zigzag,
I try to sharp it and unsharp , result is not good.
Which filter can smooth edge and sharp edge, remove zigzag for 352x288.

[Malcolm]

- post a screenshot to show the effect. maybe then, people can help you.
- i suggest using avisynth. it has several good resizers (e.g. lanczosresize)
- if your source is interlaced, deinterlace it first! you should use TomsMoComp (an avisynth-plugin) for this. e.g. TomsMoComp(1,5,1).

greetings,
Malcolm

[scharfis_brain]

best homogenous 2:1 downsize from 720x576 to 352x288 in AVS is:

crop(8,0,-8,0)
reuceby2()

[toysoldier]

@ Malcolm
Thanks for you suggestion,
my source is one dvdrip divx with ac3 movie,fps=23.976,
this is my script:
avisource("f:\example.avi",false) #because ac3 cann't play in VD
addborders(0,??,0,??) # forgot exactly resolution,just keep 4:3

save it,and load in virtualdub, and add filters below:
resize (precise bilinear) 352x288 (sometime resize to 384x288)
sharpen (strength 10) #sharp edge
unsharp mask (dia 3, str +1,threshold 5) #sharp edge
spacial smoother (stren 7) #remove noise
textsub #add some subtile

then use frameserver to tmpgenc compress it ,
the result is very clean and sharp, but with litte zigzag.

@scharfis_brain
Thanks a lot,my admire guru!

I will try reduceby2() after work.
my target is make a sharp and smooth edge mpeg1,
although now everyone begin to research DVD,
but I think there have a lot of things to learn in compress mpeg1.
Wish you write more and more best filters for fans,
Thanks,bye.