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Aegisub is an advanced subtitle editor for Windows, and UNIX-like systems, such as Linux, Mac OS X and BSD. It is open source software and free for any use. Aegisub natively works with the Advanced SubStation Alpha format (aptly abbreviated ASS) which allows for many advanced effects in the subtitles, apart from just basic timed text. Aegisub's goal is to support using these advanced functions with ease.

Free software
OS:Windows MacOS
File size:18.7MB
Portable version
Old versions available
Version history available

5 votes

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  Latest version

3.2.2 (December 08, 2014)

Download sites

Visit developer's site

Download Aegisub 3.2.2 (direct link)

Download Aegisub 3.2.2 64-bit (direct link)

Download portable, Mac and other versions

Download Aegisub 3.2.2 portable (direct link)

Download Aegisub 3.2.2 portable 64-bit (direct link)

Download Aegisub Mac version (direct link)

Download old versions

Download Aegisub old versions

Supported operating systems

WinWindows MacMac OS

Aegisub screenshot
Click to enlarge screenshot

Version history / Release notes / Changelog

Aegisub 3.2.2 Changelog

Update Spanish, Ukrainian, Hungarian and Finnish translations
Skip writing the Aegisub project stuff when exporting to ASS
Fix some ugliness in the OS X icon
Update the selection and scroll position after opening subtitles from video
Fix crash on a certain kind of malformed shift times history file
Don't set the YCbCr header field to "None" when resampling resolution without changing colors
View full changelog

Sections/Browse similar tools

Alternative to Aegisub

DivXLand Media Subtitler


Sub Station Alpha


Subtitle Edit

Subtitle Workshop

Guides and How to's

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6 comments, Showing 1 to 5 comments

@ferkelchen33, I'll give you a hint: "Buy a new computer".

I have a pentium dual core, and never had these problems you mentioned.

Posted September 23, 2014 by AlvoErrado2. Tool version 3.2.1 using OS Windows 7 64-bit
Ease of use 7 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 8 of 10
Guides: ... ns/ts/

You wrote on Aegisub "Alternative to DivXLand Subtitler" ... the biggest difference, for me at least, is that it can not include a subtitle over video ... DivXLand Subtitler can make ;)

Posted November 24, 2013 by stefan_ioan. Tool version 3.0.4 using OS Windows 7 64-bit
Ease of use 7 of 10 Functionality 6 of 10 Value for money 10 of 10 Overall score 8 of 10

I've used this to subtitle 3 Japanese musicals. I found it very easy to use and exceptionally powerful. It is an advanced subbing tool. You can easily set it so you can see typical TV overscan and make sure your subs don't fall off the screen. Styles are great for creating a custom color/font and size to each speaker. Where songs are sung in several separate parts the subs can easily be located in different parts of the screen to make it clear who is singing what.

Yes it is slow to load the video and audio. But once loaded, timing is a snap. The audio waveform shows you visually exactly where dialogue starts and ends. You can easily move markers to fine-tune the timing. Though it would be nice if you could save in other formats, the format it uses, .ass (Advanced Substation Alpha) allows for a wide range of details that other formats would lose.

Posted October 23, 2011 by Usagi. Tool version 2.1.8 using OS WinXP
Ease of use 9 of 10 Functionality 9 of 10 Value for money 10 of 10 Overall score 9 of 10

This software is very complicated to use. And abvoe all, it is SLOW! Takes a lot of RAM and CPU and to open a video file takes forever, because the whole file is scanned through, just as if you would open it in Avidemux. It is scanned completely. This alone makes it virtually unusable. Especially if you want to sync several subtitles one after another. Then it is so annoying to wait each time for Aegis to scan the whole video file, not to mention that it doesn't open the sound of the video file by default. But the sound is needed to make the sync. And the sound also is scanned from start to end, which again takes ages. This software is so annoyingly slow, it's unbearable. So I stick to Subtitle Workshop until there's a better alternative, i.e. I hope that Subtitle Workshop gets updated for Unicode/UTF support.

Posted April 09, 2010 by ferkelchen33. Tool version 2.18 using OS WinXP
Ease of use - of 10 Functionality - of 10 Value for money - of 10 Overall score 5 of 10

I recently downloaded a MKV file that used ASS format subtitles. ASS is short for Advanced SubStation(Alpha). The subtitles worked well but I wanted to convert to standard DVD Video and the subs were all wrong for that format in that they were overly large and the position was wrong. I was able to use Aegisub to fix the font size to a smaller size as well as adjust the position of the subs so that they weren't too low on the screen nor extended too far to either side. I am no expert when it comes to subtitles but I have some limited experience using Subtitle Workshop so in the end it didn't take me long to figure it all out and the HELP file included did help (although not much). However it worked without too much hardship on my part so all in all I am happy.

Posted July 22, 2007 by FulciLives. Tool version v1.10 using OS WinXP
Ease of use 9 of 10 Functionality 9 of 10 Value for money 10 of 10 Overall score 9 of 10

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