Thanks, hello_hello, I will try
SVP is smoothvideo project, imho the best available pc's motion interpolator. It was paid-free and free to change settings to 3* version, it becomes shareware from 4* version with free libraries, but... Even "pro" version of this is not really pro, it do not allow you to control avisynth behaviour, just has slider, which makes mostly nothing. Slider's backend should be smart, but imho, it's stupid, not optimized. So I port SVPPro to clear avs with full access muhaha
Wtf why am I must use float(number) to get correct result