Aegisub is a subtitle editing application. It is the main tool used for fansubbing, the practice of creating or translating unofficial subtitles for visual media by fans. It is the successor of the original SubStation Alpha and Sabbu.
Aegisub's design emphasizes timing, styling of subtitles, and the creation of karaoke videos. It allows for many video processing bindings to process the timing, such as FFmpeg and AviSynth. It can also be extended with the Lua and MoonScript scripting languages.
The application's native subtitle format is Advanced SubStation Alpha, which supports subtitle positioning and styling. Aegisub can export subtitles to other common formats as well, such as SubRip's ".srt" format, but at the cost of losing all other features except for raw text and basic timing.
In fansubbing, Aegisub is used when translating and interpreting languages, creating and adjusting timing, editing subtitles, typesetting, quality checking, karaoke lyric timing and karaoke text effects. However, different tools can be used to achieve the same effect, such as Adobe Premiere Pro for typesetting, or a simple text editor like Notepad++ when providing translated text.
What is Aegisub?
Aegisub by Aegisub Team is open-source Windows software in the video editors category. It ranks 5th by popularity among video editors in this catalogue. The first release dates back to 2005. It is written in C++ and Lua. Besides Windows, it is available for macOS, Unix-like operating system and Linux.
Installation and requirements
The publisher provides EXE (Inno Setup) installers for 64-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 3.5.1, released on October 17, 2026. The version history goes back to December 8, 2014: 6 releases, all linked to the official files. That is about 0.5 releases a year. The last update is less than a month old.
Popularity and file types
The Chocolatey package has been downloaded 16,985 times. The source code on GitHub (TypesettingTools/Aegisub) has 2,022 stars. Wikipedia has an article about it in 15 of our languages. On Windows it registers 5 file types, including .srt, .ass, .ssa, .ttxt and .mks. Similar programs include Shotcut, OpenShot Video Editor and Subtitle Edit.
Project description on GitHub: “Cross-platform advanced subtitle editor”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Updated in the last two months
- Also runs on macOS, Unix-like operating system and Linux
- Mature project (since 2005)
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: Aegisub is an open-source video editor tool for 64-bit PCs. Administrators can deploy it unattended.
Key features
- Simple and intuitive yet powerful interface for editing subtitles
- Support for many formats and character sets
- Powerful video mode
- Visual typesetting tools
- Intuitive and customizable audio timing mode
- Fully scriptable through the Automation module
AppStream · Flathub
Screenshots
Is Aegisub 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:
A1C6E03F9E3117AF36641F70146495B713B9DC821BD77F1A1E3FBF0C7EF13053· 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 12 years · about 0.5 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 3.5.1Latest | October 17, 2026 | — | 64-bit EXE (Inno Setup) |
| 3.5.0 | October 5, 2026 | — | 64-bit EXE (Inno Setup) |
| 3.4.2 | January 13, 2025 | — | 64-bit EXE (Inno Setup) |
| 3.4.1 | January 1, 2025 | — | 64-bit EXE (Inno Setup) |
| 3.4.0 | December 19, 2024 | — | 64-bit EXE (Inno Setup) |
| 3.2.2 | December 8, 2014 | — | 32-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
Install from the command line
Silent install ›winget install --id Aegisub.Aegisub -echoco install aegisub -yscoop install extras/aegisubAegisub-3.5.1-x64.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-Related guide: How to use winget: install and update apps
Also for other systems
flatpak install flathub org.aegisub.AegisubInformation
- Publisher
- Aegisub Team
- Category
- Video editors
- Licence
- GPL-2.0
- Price
- Free
- Source code
- github.com/TypesettingTools/Aegisub
- Written in
- C++ and Lua
- Content rating
- All ages
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (Inno Setup)
- Other platforms
- macOS, Unix-like operating system, Linux
- Version
- 3.5.1
- Released
- October 17, 2026
- First release
- 2005
- Added to the catalogue
- January 7, 2022
- Versions listed
- 6
- Updates / year
- 0.5
- Chocolatey downloads
- 16,985
- GitHub stars
- 2,022
- GitHub forks
- 663
- Website
- aegisub.org
- winget ID
- Aegisub.Aegisub
- Chocolatey package
- aegisub
- Scoop package
- extras/aegisub
File types it opens (5)
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to Aegisub
See all ›-
Open source403.1K ↓ -
Open source402.5K ↓ -
Open source97.2K ↓ -
Open source47.1K ↓ -
Open source178.5K ↓ -
FilmCraft0.18.0Video editing, color and sound; an open-source, clean-room reimplementation of Adobe Premiere Pro, rebuilt in pure RustOpen source853 ↓ -
Open source4.4K ↓ -
Open source4.9K ↓
Frequently asked questions
Is Aegisub free?
Yes. Aegisub is open-source software under the GPL-2.0 licence.
Is Aegisub 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 Aegisub 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 Aegisub be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Aegisub 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 Aegisub?
The versions page lists all 6 versions with links to their official installer files, back to December 8, 2014.
What are alternatives to Aegisub?
Shotcut, OpenShot Video Editor, Subtitle Edit, LAV Filters and Kdenlive. The alternatives page compares them.
