VapourSynth

A Python-scripted video processing frameserver with a plugin ecosystem for filtering and restoring video.

FreeOpen sourceWindowsmacOSLinuxCommand line
Official websitevapoursynth.comDownload pagegithub.comDocumentationvapoursynth.com

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About VapourSynth

VapourSynth processes video through scripts written in Python, chaining source, filter and restoration plugins such as BestSource and ports of denoisers like KNLMeans and BM3D. The output can be fed to an encoder or viewed as it is processed, making it a scriptable alternative to AviSynth.

Release R80 added GPU support through Vulkan 1.4 on Windows, Linux and macOS (via MoltenVK), with one GPU used at a time. It suits encoders and restoration hobbyists comfortable writing scripts rather than using a graphical editor.

Strengths

  • Video pipelines written as Python scripts
  • Wide plugin ecosystem for filtering and restoration
  • GPU acceleration through Vulkan in recent releases
  • Actively developed with frequent releases

Limitations

  • No graphical editor; requires scripting
  • GPU support needs Vulkan 1.4 and uses one GPU at a time
  • Windows 7 support ended with release R73

Details

Pricing
FreeFree and open source.
License
LGPL-2.1
Developer
The VapourSynth contributors
Platforms
Windows, macOS, Linux, Command line
How it runs
Downloadable app
Account
Not required
Works offline
Yes
Best suited for
Scripted video filtering, restoration and pre-processing before encoding
Last verified
Added
Provenance
Facts checked against the developer's own pages and store listings, 1 sources on file.

Alternatives to VapourSynth

Compare all

Software that can replace VapourSynth for an important use case, and what changes if you switch.

  • AviSynth+

    A frameserver for scripted video processing and filtering, forked from AviSynth.

    FreeOpen sourceWindowsLinux

    AviSynth+ uses its own scripting language instead of Python, supports existing AviSynth plugins and runs on Windows and Linux rather than also macOS.

VapourSynth as an alternative

Listings that name VapourSynth as an alternative.

  • Topaz Video

    Video enhancement software that uses AI models to upscale, stabilize, sharpen and interpolate frames in footage.

    PaidProprietaryWindowsmacOS

    VapourSynth is free open-source scripted filtering and restoration with plugins and Vulkan GPU support, requiring Python scripts instead of a graphical app.

Similar software

Related functionality, not necessarily a direct replacement.

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