Morusque

thanks for telling me! I updated it, the last version should work hopefully.

Oh I understand what you mean, the example gif can be a bit misleading : notes with a different pitch just happen to respectively have a different velocity in the original sequence I was using when recording the gif but not as a result of the transformation.
The transformation can be applied on velocity or pitches but not one depending on the other. Would you have a use for a pitch-dependant velocity scaler?

Lerp slider live update > You're right, I updated that.

Quantization > Ok I'll think about it, for now you can simply quantize it afterwards with the usual editing tools.

I reuploaded the right 80kb version but the file in the download section still seems corrupted for some reason.
Try this link : https://nurykabe.com/dump/tools/midiScalers/rescalers(jsui).zip