Aegisub is an application which can be used in order to create or edit subtitles for movie files. Users have the possibility to create their own subtitle file, but they can also use the tool in order to edit already existing ones and tune them up to be usable for a specific video file. Usually, subtitles may have different flaws and with the aid of this app, these can all be fixed.
As users load a subtitle file within Aegisub, regardless of its format, its contents will be quickly displayed within the text editor area. All of the lines and times are shown on the file and users can choose if they want to manually edit one of these entries. Of course, when an issue such as the frame rate is the problem, there are automated solutions which do not require users to manually edit all of the times within the subtitle.
Aegisub is able to provide formatting support for subtitles and it allows users to add comments in between the lines. Scripting can be easily done within the app as it provides full support for Lua scripts, so that subtitle files can be edited quickly and even as batches. A detailed help file is provided for those that want to create and use scripts.