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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:r40
Released:Nov 10,2017
File size:9.9MB
8.8/10
1 vote

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VapourSynth screenshot
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Latest version

r40 (November 10, 2017)




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Download VapourSynth r40  [9.9MB]  [Win]

Download VapourSynth r40 64-bit  [9.9MB]  [Win64]




Download portable and other versions

Download VapourSynth r40 portable  [2.8MB]  [Win]  [Portable]

Download VapourSynth r40 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


r40:
updated to zimg v2.6.2
fixed blankclip format check to not reject substituted format compat clips
improved expr asm slightly
made the framebuffer memory pool size a percentage of the total allowed memory usage instead of a fixed size, this should scale better when processing 8k and larger resolutions
fixed rgb output sometimes being flipped in avisource
added alpha output settings to avisource, the default is no alpha output
fixed gamma being infinite if not set in levels, bug introduced in r39
removed the hack needed to support avisynth mvtools, the native mvtools has been superior for several years now and removing the hack makes avisynth filter creation much faster
added avisynth+ compatibility
only do prefetching in avfs with vs script when linear access is detected, fixes excessive prefetching that could make opening scripts very slow

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




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Alternative to VapourSynth


Avisynth







Guides and How to's


Download VapourSynth portable download



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1 reviews, Showing 1 to 1 reviews

Not for the feint of heart, vapoursynth is intended for people conversant with scripting - this tool is essentially a more modern avisynth replacement using its own python based scripting and new sets of plugins. Some "old" avisynth plugins seem forward compatible, but not all. It is NOT a gui tool although there is a separate gui if you want (see over at doom9, vsedit is its name).

Highly versatile, building on the large knowledge base and many discussions and examples over at doom9, this is a highly versatile "swiss knife" of a thing to use when you can't afford $thousands for a commercial gui tool (vapoursynth is $free).



Nov 11, 2017 Version: r39 OS: Windows 10 64-bit Ease of use: 6/10 Functionality: 10/10 Value for money: 10/10 Overall: 9/10


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Our hosted tools are virus and malware scanned with several antivirus programs using www.virustotal.com.


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