Spline vs Spline36 in

[lolman]

hello
what are the basic differences related to quality, noise, artifacts, sharpness
between spline resize used in x264 and spline36, spline64 used in avisynth?
generally which gives more sharpness, which gives more artifacts?
thank you!

[racer-x]

http://avisynth.nl/index.php/Resize

[lolman]

http://avisynth.nl/index.php/Resize

Thanks!
The link is about Avisynth Spline versions. 16, 36, 64... Info about them can be found easily and no need to ask questions like this.

It is not clear about Spline used in x264 in that link. (or it has nothing about the Spline, but Spline16/26/64).

What I want is a comparison/differences between Spline16/26/64 used in avisynth with the Spline used in x264 and probably in MadVR and others.

[poisondeathray]

It's the same one used in ffmpeg (natural bicubic spline). That is where the filtering patch came from. Avisynth doesn't have the exact equivalent. It's between 16 and 36 in terms of sharpness and artifacts (closer to 36, slightly softer) . Just try it out on some test images (e.g. test patterns, zone plates) and see for yourself what you're looking for specifically.

[lolman]

It's the same one used in ffmpeg (natural bicubic spline). That is where the filtering patch came from. Avisynth doesn't have the exact equivalent. It's between 16 and 36 in terms of sharpness and artifacts (closer to 36, slightly softer) . Just try it out on some test images (e.g. test patterns, zone plates) and see for yourself what you're looking for specifically.

Thank you very much!