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VapourSynth is an application for video manipulation. Or a plugin. Or a library. Its hard to tell because it has a core library written in C++ and a Python module to allow video scripts to be created. It came to be when I started thinking about alternative designs for Avisynth and most of it was written over a 3 month period. The software has been heavily inspired by Avisynth and aims to be a 21st century rewrite, taking advantage of the advancements computers have made since the late 90s. Requires Python! Full description.

Free software
Win Win

Version:r24 History
Released:

Size:6.1MB



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  Latest version:
r24 (August 14, 2014)


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Download VapourSynth r24 (direct link) (6.1MB)


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Download VapourSynth old versions


Supported operating systems:
Windows


Sections/Browse similar tools:
Video Editors (Advanced/NLE)

VapourSynth screenshot
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Version history / Release notes / Changelog:
R24 Making VSScript Sane
Posted on August 14, 2014

Its finally time for another release with big improvements. Mostly because people tried to use VapourSynth and had opinions about it, and as a result the VSScript API has been improved to make more sense and plenty of minor odd things in the Python module have been fixed.

Release highlights:

FreezeFrames, DuplicateFrames and DeleteFrames filters added
An experimental ImageMagick reader/writer added
VSPipe can pass arguments into scripts being evaluated
The number of threads to use can be set at any time both from the API and Python
The VSScript API has been improved and now behaves more sanely in addition to reporting failure/success for more operations
An exceptional number of serious bugs fixed, most of them fortunately rare
Main compatibility issues with previous versions:

The Python module no longer adjusts arguments for filters that had them changed in R22. See the R22 release post for more details.
VSPipe has a new argument parser and slightly changed argument handling better match command line utilities in general. Short versions of arguments have also been added.

View full changelog



All features / Full description:
The main features compared to Avisynth are:

Multithreaded Frame level multithreading
Generalized Colorspaces New Colorspaces can be specified at runtime
Per Frame Properties Additional metadata can be attached to frames
Python Based The scripting part is implemented as a Python module so you dont have have to learn a special language
Support for video with format changes Some video just cant stick to one format or frame size VapourSynth can handle any kind of change


Alternative to VapourSynth:
Avisynth



Guides and How to's:
No guides/tutorials, submit guides here.



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