What is the Avisynth wiki (avisynth.nl)?

avisynth.nl is the community-maintained documentation wiki for AviSynth, a frameserver used for video post-production. It is a reference and learning site, not the software itself: it hosts guides, an FAQ, scripting syntax documentation, and filter references, and it links out to download pages and forums where the actual builds and discussion live.

What you'll find on the site

The wiki is organized around documentation rather than downloads. Its main entry points include:

• AviSynth FAQ – answers to common problems
• Internal filters – filters built into AviSynth
• External filters – separately distributed filters
• AviSynth Syntax – the scripting language reference
• Sourceforge and Doom9 Forum – links to hosting and community discussion

For newcomers, the wiki collects a set of starting points in one place:

• Your first script – a guide for total newbies
• Getting started – an introductory guide
• Grammar – an introduction to the AviSynth scripting language
• Filter introduction – an introductory guide to the most common filters
• Script examples – putting everything together in real-world use
• Guides – basics, tips on specific conversion types, and common tasks
• Troubleshooting – for scripts and configuration

What AviSynth itself is

According to the wiki, AviSynth is a powerful tool for video post-production that provides ways of editing and processing video. It works as a frameserver, providing instant editing without the need for temporary files.

A key characteristic: AviSynth does not provide a graphical user interface. Instead it relies on a script system that allows advanced non-linear editing. The wiki acknowledges this can seem laborious and unintuitive at first, but argues it is remarkably powerful and a good way to manage projects precisely, consistently, and reproducibly. Because the scripts are text-based and human-readable, projects are inherently self-documenting, and complex filters can be built from basic operations.

AviSynth is free open-source software, licensed under the GNU General Public License GPLv2.

Downloads and builds

The wiki's download section points to builds rather than hosting them directly:

Who runs it

The wiki states it has been hosted by the same person since around 2010 (taken over from Richard Berg). Content is maintained by several people, and the site notes that hosting costs a lot of money. Donation options listed are Buy Me a Coffee (buymeacoffee.com/avisynth) and PayPal (paypal.me/avisynth).

When to use it

Use avisynth.nl when you need to look up how a filter works, check scripting syntax, follow a beginner guide, or troubleshoot a script. If you want to download AviSynth or follow current development, the wiki directs you to the AviSynth+ homepage and GitHub releases instead.