[HELP] LimitedSharpen for Vapoursynth

[Selur]

Something that selective Blur the garbage, or something?

Basically anything that removes information will help lower the bit rate.
So adding degrain, delocking, all should lower the bit rate since they remove details.
Debanding will increase bit rate, since it's smoothing followed by adding grain and the added grain is what will increase bit rate requirements.
There is no magic filter that knows what should be considered 'garbage' and what are details.

Cu Selur