AviSynth

[kelvin]

Were the scripts you post here found on the internet or did you create them yourself? (sorry about my English)

[manono]

Some people copy scripts they find here or elsewhere. Most write their own. Me, I have templates I use for different purposes, editing them for specific videos. Your best bet to learn your way around AviSynth is to read everything you can on the AviSynth website, especially the sections for beginners. Then Doom9 has its own AviSynth subforum.

[lollo]

It is difficult to find a script appropriate for your own specific source. What can be generalized is the sequence of the filtering, i.e deinterlace (if appropriate), denoise, sharpen. Sometime you need stabilization, or to remove defects in a stronger way than a denoiser can do, or do a level/color correction or a dehaloing, and this processing must be inserted somewhere in the flow.

Inside a "generic" scheme, however, there are many filters implementing the same function in a more effective way, depending on the source (denoiser and sharpener); and inside the same filter, its parameters play an important role for optimization.

As manono proprely said, start with basic operations, build your own scripts and experimenting many different scenarion (this is the key point, experiment with your own material), and come to doom'9 forums for AviSynth (or VapourSynth) discussions. Many very knowledgeable users like poisondeathray, jagabo, Selur, and others are also active on videohelp forums. Study their solutions to the issues posted in the different threads, and you will learn a lot. It will take time and effort, but the final result will be worth the time you'll spend.

[kelvin]

That's exactly what I'm looking for, to learn.
Does anyone recommend me an article for beginners?

[lollo]

Does anyone recommend me an article for beginners?

What is not clear in post #2?

[johnmeyer]

That's exactly what I'm looking for, to learn.
Does anyone recommend me an article for beginners?

Have you tried Google??

AVISynth Tutorial