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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!

Free software
OS:Windows
Version:r39
Released:Oct 7,2017
File size:9.9MB
5/10
1 vote

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VapourSynth screenshot
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Latest version

r39 (October 7, 2017)




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Download VapourSynth r39  [9.9MB]  [Win]

Download VapourSynth r39 64-bit  [9.9MB]  [Win64]




Download portable and other versions

Download VapourSynth r39 portable  [2.8MB]  [Win]  [Portable]

Download VapourSynth r39 portable 64-bit  [3.1MB]  [Win64]  [Portable]




Download old versions


Download VapourSynth old versions




Supported operating systems

WinWindows




License

Free software




Version history / Release notes / Changelog


r39:
updated to zimg v2.6
updated pismo file mount runtime to build 188
added offline documentation to the installer
fixed clamping issues in levels filter
renamed the croprel function to crop, croprel will still be kept as an alias for for compatibility with existing scripts
fixed missing max value clamping for 9-15 bit input with convolution
optimized prewitt and sobel
removed the min and max arguments from sobel and prewitt because they interact very oddly with float formats
avisynth compatibility can now handle functions with multiple overloads
added float support to boxblur
removed subtext file size limit
fixed missing fps correction in avisource that would produce an error with some files
switched to nasm as the assembler
visual studio runtime detection is improved in the installer, it should no longer attempt re-installs when a newer version is present
minor optimization in vspipe, you can now output blankclip into the void much faster
memory will now be 64 byte aligned on systems with avx512 support
added swapn and dupn operators to expr
reverted the argument handling in levels, arguments no longer take a 3 plane list due it making no sense when combined with the planes argument
optimized levels, the integer version is now implemented with a lut and the floating point version is faster when gamma=1.0
improved get_outputs() in python (stuxcrystal)
format objects can now be cast to int which will return the format id (stuxcrystal)
added method to make it easier to query formats from python (stuxcrystal)
made it possible to install the python part as a module (stuxcrystal)

View full changelog




All features


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




Sections/Browse similar tools






Alternative to VapourSynth


Avisynth







Guides and How to's


Download VapourSynth portable download



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