Avisynth Resizers

[ar]

Sup, Doom9!
You are so experienced in video editing||encoding. I'd like you to tell me wich resize filter is better for, or which artifacts should i pay attention to, when i'll try to compare some filters?

Thanks in advance.
Sorry for my english.

[a451guy451]

Better for what? I use mostly lanczos and spline36.

[Gser]

I use spline64.

[burfadel]

'Better' is an objective term, for my needs I use spline64.

[LoRd_MuldeR]

You might find this site helpful:
http://hermidownloads.craqstar.de/videoresizefiltercomparasion/

For the rest I'd recommend doing a comparison yourself with your individual footage. For example like this:

src = FooSource("File.foo")

w = src.Width * 2
h = src.Height * 2

a = src.PointResize(w,h).Subtitle("PointResize")
b = src.BiLinearResize(w,h).Subtitle("BiLinearResize")
c = src.BiCubicResize(w,h).Subtitle("BiCubicResize")
d = src.LanczosResize(w,h).Subtitle("LanczosResize")
e = src.Lanczos4Resize(w,h).Subtitle("Lanczos4Resize")
f = src.Spline16Resize(w,h).Subtitle("Spline16Resize")
g = src.Spline36Resize(w,h).Subtitle("Spline36Resize")

return Interleave(a,b,c,d,e,f,g)

[ar]

Thanks a lot.

[Motenai Yoda]

imho
- downsampling blackman for film and spline16/bilinear for toon
- spline36/64 to upsample
- bicubic for modulation with qtrim o qmlf/qmf

there is also a sinc resize that can be useful for downsample imho.

[Jenyok]

I use nnedi2, nnedi3 to enlarge video image with very good quality and slow speed. Video image multiplies by 2, 4, 6, 8 and so on...