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Download AVIsynth, a scripting language and a collection of filters for simple non-linear editing tasks
Language: English
Ease of use: Not Rated
Latest Version: 2.6.1 Alpha 1 (details)
OS Support: Windows 95 Windows 98 Windows Me
License: Freeware
Last Updated:
Page Viewed: 202991 times


Download: AviSynth_260.exe   AviSynth_260.exe

Description:Download the latest stable version of AviSynth (2.5.8)
Version:2.6.0 (added May 31, 2015 - view changelog)
Size:6.21 MB

Download: AviSynth_20160517_VC6.exe   AviSynth_20160517_VC6.exe

Description:Download the latest beta version of AviSynth
Version:2.6.1 Alpha 1 (added May 17, 2016 - view changelog)
Size:1.39 MB

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Old Version Downloads (10 downloads)

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From the official site:
AviSynth is a very very powerful tool for video post-production. It provides almost unlimited ways of editing and processing videos. AviSynth works as a frameserver, providing instant and very fast editing without the need for temporary files.

AviSynth itself does not provide a graphical user interface (GUI) but instead relies on a script system that allows advanced non-linear editing. While this may at first seem tedious and unintuitive, it is remarkably powerful and is a very good way to manage projects in a precise, consistent, and reproducible manner. Because text-based scripts are human readable, projects are inherently self-documenting. The scripting language is simple yet powerful, and complex filters can be created from basic operations to develop a sophisticated palette of useful and unique effects


Supported File Formats:

Input Files: AVI
Output Files: AVI

OS Compatibility:

Windows 95/Windows 98/Windows Me

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Revision History:

Version 2.6.1 Alpha 1
  • Release Date: May 17, 2016
  • Download(s):
          Update to SoundTouch 1.9.0(Wilbert+IanB).
          Update to DevIL 1.7.8
          TCPDeliver update to zlib 1.2.8 and lzo-2.09.
          TCPDeliver complete Klaus's last work for 2.6 API.
          Updated 2.6.1 VC6 build scripts.
          Initial 2.6.1 VC2005 build scripts.
          DirectShowSource add BaseClasses project to Avisynth solution.
          MSVC 2008 Express project and solution files.
          Experiment with 2K8 SSE2 build.

          Add offset parameter to conditional functions(Wilbert).
          Replace convert_a.asm for yuy2 to rgb.
          Redo SEH exception handling code.
          VirtualQuery/GetModuleFileName + Trap on Invoke(SEt).
          Use LoadLibraryEx/LOAD_WITH_ALTERED_SEARCH_PATH for plugins.
          Use GetVarDef() extensivly.
          Handle exceptions from DevIL.dll now being delay loaded.
          Explicitly catch stray std::bad_alloc and report.

          Supereq gain arguments can only be int, enforce it.
          Fix handle leak with "Exists"(SEt)
          Fix VDub plugin race on cleanup
          Fix TCPDeliver crash with bad hostnames.
          Fix ShowSMPTE non-integer fps message not being thrown (raffriff42).
          Fix avisynth_c plane=0. Default params are not allowed in plain C.
          Fix MergeLuma allow any Planar test(Wilbert).
          Remove redundant self class spec from definition(Wilbert).

          Evaluate Invert arguments once in Constructor not every GetFrame, Doh!
          Move matrix decision into Convert constructor, overcome exceed cacheline.

          Remove msvcP*.dll dependances.
          Add AsFloatF(), compiler sugar!
          Move to /W4 compiler warnings.
          isolate void BitBlt(...) & long GetGPUFlags() functions.
          Add VDCall as __cdecl to VDub api calls
          Add __cdecl declaration to all api calls(SEt).
          Code cleanup(SEt). 
          Improve precompiled header usage.
          Use #pragma comment to control link options.
          Turn off RuntimeTypeInfo for the rest of the solution.
          Patch BaseClasses to avoid ATL/MFC dependance.
          Add build environment tags to various filenames and values.
          Amend template AVS_BUILD strings.
          Link with nothrownew.obj
          Remove writable system32\avisynth.dll dependency.
          Dodge 2005-2015 compiler bug with nested try/catch
          Fix missing advapi32.lib for debug builds.
View complete revision history

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