AviSynth+ is a fork of the well-known frameserver, but with community contributions that avoided mainline inclusion until now. In the hope of modernizing AviSynth to meet present day needs and expectations, the project encourages everybody to help reach our goals: add long-sought features, energize the community, and improve developer and user friendliness. AviSynth+ is fully compatible with plugins and scripts written for AviSynth.
Publisher’s description
What is AviSynth+?
AviSynth+ by The Public is open-source Windows software. It is written in C++.
Installation and requirements
The publisher provides EXE (Inno Setup) installers for 64-bit, ARM64 and 32-bit Windows. Installation asks for administrator rights. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 3.7.5.4289, released on April 21, 2025. The version history goes back to August 24, 2021: 6 releases, all linked to the official files. That is about 1.6 releases a year. The last update is more than a year old.
Popularity and file types
The Chocolatey package has been downloaded 8,581 times. The source code on GitHub (AviSynth/AviSynthPlus) has 1,213 stars. On Windows it registers 2 file types, including .avs and .avsi.
Project description on GitHub: “AviSynth with improvements”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Native ARM64 build for Windows on Arm
- Documented silent install
Cons
- Installation needs administrator rights
- No update for more than a year
In short: AviSynth+ is an open-source Windows tool for 64-bit, ARM64 and 32-bit PCs. Updates have slowed down. Administrators can deploy it unattended.
Is AviSynth+ 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:
A063CE8092D7CE861E2C663A492C7BF185B417FAB1215A2A1699F3CA5C0F77D9· 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
Recent versions
All 6 versions ›6 versions over 4 years · about 1.6 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 3.7.5.4289Latest | April 21, 2025 | — | 32-bit EXE (Inno Setup)64-bit EXE (Inno Setup)ARM64 EXE (Inno Setup) |
| 3.7.4.4273 | March 24, 2025 | — | 64-bit EXE (Inno Setup)32-bit EXE (Inno Setup) |
| 3.7.3.4003 | July 16, 2023 | — | 32-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
| 3.7.2.3661 | March 18, 2022 | — | 32-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
| 3.7.1.3593 | January 1, 2022 | — | Any CPU EXE (Inno Setup) |
| 3.7.0.3382 | August 24, 2021 | — | Any CPU EXE (Inno Setup) |
Install from the command line
Silent install ›winget install --id AviSynth.AviSynthPlus -echoco install avisynthplus -yAviSynthPlus_3.7.5_20250420.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-Related guide: How to use winget: install and update apps
Information
- Publisher
- The Public
- Licence
- GPL-2.0
- Price
- Free
- Source code
- github.com/AviSynth/AviSynthPlus
- Written in
- C++
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, ARM64, 32-bit
- Installer
- EXE (Inno Setup)
- Version
- 3.7.5.4289
- Released
- April 21, 2025
- Added to the catalogue
- August 24, 2021
- Versions listed
- 6
- Updates / year
- 1.6
- Chocolatey downloads
- 8,581
- GitHub stars
- 1,213
- GitHub forks
- 95
- Website
- avs-plus.net
- winget ID
- AviSynth.AviSynthPlus
- Chocolatey package
- avisynthplus
File types it opens (2)
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is AviSynth+ free?
Yes. AviSynth+ is open-source software under the GPL-2.0 licence.
Is AviSynth+ 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 AviSynth+ 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 AviSynth+ be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does AviSynth+ run on ARM (Windows on Arm)?
Yes, there is a native ARM64 installer.
Where can I download an older version of AviSynth+?
The versions page lists all 6 versions with links to their official installer files, back to August 24, 2021.