A video processing framework with simplicity in mind
Publisher’s description
What is VapourSynth?
VapourSynth by Fredrik Mellbin is open-source Windows software. It is written in C++.
Installation and requirements
The publisher provides EXE (Inno Setup) installers for 64-bit Windows. It can be installed for the current user only, without administrator rights. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is R81, released on October 4, 2026. The version history goes back to October 29, 2023: 15 releases, all linked to the official files. That is about 5.1 releases a year. The last update is less than a month old.
Popularity and file types
The source code on GitHub (vapoursynth/vapoursynth) has 2,118 stars. On Windows it registers 1 file type, including .vpy.
Project description on GitHub: “A video processing framework with simplicity in mind”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Installs without administrator rights
- Updated in the last two months
Cons
- No native ARM64 build
In short: VapourSynth is an open-source Windows tool for 64-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is VapourSynth safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
C49FA723CB6771BA41DA3FA04B0155FC6E873D56D010AA57D729FF158D08448F· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Security practices (OpenSSF Scorecard)
Automated checks of the vapoursynth/vapoursynth repository on GitHub by the Open Source Security Foundation, last run on October 19, 2026.
- Actively maintained10
- No dangerous workflows10
- No binaries in the repository10
- Licence declared10
- Published packages10
- Code review0
- Restricted token permissions0
- Static code analysis0
- Pinned dependencies0
- OpenSSF Best Practices badge0
- Security policy0
- Fuzzing0
- Signed releases0
- Branch protection0
The score rates how the project is developed and released, not whether the program is safe to install. scorecard.dev
Recent versions
All 15 versions ›15 versions over 3 years · about 5.1 a year
| Version | Date | Size | Files |
|---|---|---|---|
| R81Latest | October 4, 2026 | — | 64-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
| R80 | September 16, 2026 | — | 64-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
| R79 | August 7, 2026 | — | 64-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
| R78 | July 24, 2026 | — | 64-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
| R76 | May 14, 2026 | — | 64-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
| R75 | April 30, 2026 | — | 64-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
| R74 | April 5, 2026 | — | 64-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
| R73 | November 24, 2025 | — | 64-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
Install from the command line
Silent install ›winget install --id VapourSynth.VapourSynth -escoop install main/vapoursynthVapourSynth-x64-R81.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-Program files (.exe): vspipe.exe, vsrepo.exe
Related guide: How to use winget: install and update apps
Also for other systems
brew install vapoursynthInformation
- Publisher
- Fredrik Mellbin
- Licence
- LGPL-2.1
- Price
- Free
- Source code
- github.com/vapoursynth/vapoursynth
- Written in
- C++
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (Inno Setup)
- Version
- R81
- Released
- October 4, 2026
- Added to the catalogue
- January 25, 2024
- Versions listed
- 15
- Updates / year
- 5.1
- GitHub stars
- 2,118
- GitHub forks
- 184
- Website
- vapoursynth.com
- winget ID
- VapourSynth.VapourSynth
- Scoop package
- main/vapoursynth
File types it opens (1)
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is VapourSynth free?
Yes. VapourSynth is open-source software under the LGPL-2.1 licence.
Is VapourSynth safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install VapourSynth with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can VapourSynth be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does VapourSynth run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of VapourSynth?
The versions page lists all 15 versions with links to their official installer files, back to October 29, 2023.
Can I use VapourSynth without administrator rights?
Yes, there is a per-user installer that does not need administrator rights.