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AviSynth+ is a fork of the well-known frameserver featuring new functionality and optimizations not available in mainline. In the hope of modernizing AviSynth to meet present day needs and expectations, the project encourages everybody to help reach our goals: add long-sought features, energize the community, and improve developer and user friendliness. AviSynth+ is fully compatible with plugins and scripts written for AviSynth.

Free software
Released:Mar 2,2018
File size:22.9MB
2 votes

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AviSynth+ screenshot
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Latest version

r2636 (March 2, 2018)


Visit developer's site

Download AviSynth+ r2636  [22.9MB]  [Win]

Download AviSynth+ r2636 64-bit  [22.9MB]  [Win64]

Download Portable and other versions

Download AviSynth+ r2636 portable  [2.6MB]  [Win]  [Portable]

Download AviSynth+ r2636 portable 64-bit  [2.6MB]  [Win64]  [Portable]

Download old versions

Download AviSynth+ old versions

Supported operating systems



Free software

More information and other downloads

All downloads includes both 32-bit and 64-bit versions of Avisynth+.

Version history / Release notes / Changelog

Avisynth+ r2636 (20180302)

Blur/Sharpen crashed when YUY2.width<8, RGB32.width<4, RGB64.width<2
ColorYUV: don't apply TV range gamma for opt="coring" when explicit "PC->TV" is given
ColorbarsHD: 32bit float properly zero(0.5)-centered chroma

View full changelog

All features

Changes compared to AviSynth

64-bit version available
Faster script startup and substantially faster core filters
Support for multiple ("shadow") plugin directories
Autoloading of C-plugins
Script language extensions, with support for multiline conditionals and loops.
Improved still image support and TimeStretch

Developer features

Easy and fast compilation, with current compilers
2x increased compilation speed
Improved debugging experience
Leaner and more logical project structure
Large parts of the code refactored

Sections/Browse similar tools

Alternative to AviSynth+


Guides and How to's

Acronyms / Also Known As

AviSynth Plus, AviSynthPlus, Avisynth MT

Download AviSynth+ portable download

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2 reviews, Showing 1 to 2 reviews

Wish this is implemented in other FOSS Video Editors (Blender VSE or Shotcut)

Dec 19, 2017 Version: r2574 OS: Windows 10 64-bit Ease of use: 7/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

The development keeps going on. As I write these lines the most recent build is the r2508 version that can be found here :

Actually, there is no installer for newest builds, but an alternative package can be downloaded here (x64 only) :

Additional features :

FFMpegSource2 v2.23

Optional :

A selection of plugins with their documentation
A selection of scripts (incl. Interframe2, QTGMC)
A basic script template ready to use
New icons, black for regular scripts, blue for auto-load scripts or classic original style
New context menu entry for the templates
Open scripts with Notepad++
Open .ass with Notepad++
Open .ass files in Aegisub menu item
Full integration of .ass subtitle files (incl. a dedicated icon)
AviSynth+ language syntax recognition file for Notepad++
VirtualDub FilterMod

Jul 24, 2017 Version: r2508 OS: Windows 10 64-bit Ease of use: 5/10 Functionality: 10/10 Value for money: 10/10 Overall: 8/10

2 reviews, Showing 1 to 2 reviews

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