Video subtitles
File type: Text file
Files with sub extension are usually video subtitles in one of the most common subtitle format. It's a plain text file format that contain individual text entries with time stamps that basically tell the media player which text and at what playback time it should show.
Found 7 different file type records with the same sub filename suffix.
File type category:
Text file
Date updated: July 13, 2025
File extension sub is probably best known as one of the most common type of video subtitles, a textual versions of the dialog in movies, usually displayed at the bottom of the screen.
Many tools use .sub files for subtitles and you can find many variants based on which program was used to make them starting from the original MicroDVD, SubViewer to VobSub. But the core remains the same.
These can either be a form of written translation of a dialog in a foreign language, or a written rendering of the dialog in the same language, with or without added information to help viewers who are deaf and hard-of-hearing to follow the dialog.
SUB subtitle format is often used for subtitles for DivX movies, very popular on P2P servers (torrents).
A variant of sub format is sometimes labeled as VobSub, which you can identify by .idx file that is found together with the .sub file.
The .sub files can be edited by text editor or word processor.
Very useful for playing SUB subtitle file in the movie is VobSub DirectShow filter. VobSub is not related to any video player, VobSub runs, when the movie is played in any media player and VobSub shows the subtitles in the movie.
When the subtitles have the same name as the movie, VobSub opens the subtitles automatically, but when the subtitles haven't got the same name, you must open the subtitles in VobSub configuration menu manually.
Very useful conversion utility is distributed along with VobSub DirectShow filter. You can use this utility to open many subtitle formats and then saved them to another subtitle format.
Gaupol Subtitle Editor (Microsoft Windows)
SubtitleCreator (Microsoft Windows)
Subtitle Edit (Microsoft Windows)
Swift Create (Microsoft Windows)
Subtitle Workshop (Microsoft Windows)
Subcleaner (Apple macOS / Mac OS X)
Jubler subtitle editor (Apple macOS / Mac OS X)
Bistec (Apple macOS / Mac OS X)
Subs Factory (Apple macOS / Mac OS X)
Gnome Subtitles (Linux/Unix)
URUworks Subtitle Workshop (Multiplatform)
TeroSubtitler (Multiplatform)
Aegisub (Multiplatform)
Gaupol Subtitle Editor (Microsoft Windows)
SubtitleCreator (Microsoft Windows)
Subtitle Edit (Microsoft Windows)
Swift Create (Microsoft Windows)
Subtitle Workshop (Microsoft Windows)
Subcleaner (Apple macOS / Mac OS X)
Jubler subtitle editor (Apple macOS / Mac OS X)
Bistec (Apple macOS / Mac OS X)
Subs Factory (Apple macOS / Mac OS X)
Gnome Subtitles (Linux/Unix)
URUworks Subtitle Workshop (Multiplatform)
TeroSubtitler (Multiplatform)
Aegisub (Multiplatform)
Gaupol Subtitle Editor (Microsoft Windows)
SubtitleCreator (Microsoft Windows)
Subtitle Edit (Microsoft Windows)
Swift Create (Microsoft Windows)
Subtitle Workshop (Microsoft Windows)
Subcleaner (Apple macOS / Mac OS X)
Jubler subtitle editor (Apple macOS / Mac OS X)
Bistec (Apple macOS / Mac OS X)
Subs Factory (Apple macOS / Mac OS X)
Gnome Subtitles (Linux/Unix)
URUworks Subtitle Workshop (Multiplatform)
TeroSubtitler (Multiplatform)
Aegisub (Multiplatform)
KMPlayer (Microsoft Windows)
VLC media player (Microsoft Windows)
VobSub (Microsoft Windows)
VLC media player for Mac (Apple macOS / Mac OS X)
VLC media player for Linux (Linux/Unix)
TeroSubtitler (Multiplatform)
Gaupol Subtitle Editor (Microsoft Windows)
SubtitleCreator (Microsoft Windows)
Subtitle Edit (Microsoft Windows)
Jubler subtitle editor (Apple macOS / Mac OS X)
Subs Factory (Apple macOS / Mac OS X)
Gnome Subtitles (Linux/Unix)
URUworks Subtitle Workshop (Multiplatform)
Aegisub (Multiplatform)
SubtitleCreator (Microsoft Windows)
Subtitle Edit (Microsoft Windows)
Subcleaner (Apple macOS / Mac OS X)
Jubler subtitle editor (Apple macOS / Mac OS X)
Subs Factory (Apple macOS / Mac OS X)
Gnome Subtitles (Linux/Unix)
URUworks Subtitle Workshop (Multiplatform)
Subtitle Converter (Apple macOS / Mac OS X)
MKVtoolnix (Microsoft Windows)
Subtitle 3D (Microsoft Windows)
MKVtoolnix for Mac (Apple macOS / Mac OS X)
MKVtoolnix for Linux (Linux/Unix)
File type category:
Disk image (ISO) binary file
Date updated: October 10, 2018
Use CloneCD to work with *.sub files.
Probably cannot be converted to other formats.
CloneCD (Microsoft Windows)
CloneCD (Microsoft Windows)
CloneCD (Microsoft Windows)
File type category:
Various data file
Date updated: October 16, 2018
The sub file extension is also used for component packages in IBM Rational Rose software.
The IBM Rational Rose platform is used to integrate legacy integrated development environments or languages.
Rational Rose Developer for Java (Multiplatform)
File type category:
Settings, options, themes or skins file
Date updated: January 23, 2019
The sub file extension is associated with the Insight II, a scientific data analysis program for Microsoft Windows operating system, developed by Accelrys.
The sub file contains subset definition used by Insight II.
Use Insight II to work with *.sub files.
Probably cannot be converted to other formats.
Insight II (Linux/Unix)
Insight II (Linux/Unix)
Insight II (Linux/Unix)
File type category:
Various data file
Date updated: March 23, 2016
The SUB file extension was also used in SubmitWolf program. SubmitWofl is an automated search engine submission software from Trellian as a saved website submission project.
These sub files can be opened only SubmitWolf. The software is obsolete and no longer supported.
SubmitWolf (Microsoft Windows)
File type category:
Game file
Date updated: July 14, 2016
The sub file extension is related to the SubTerra, a puzzle solving adventure computer game for Microsoft Windows and Linux operating systems.
The sub file stores level data for SubTerra.
File type category:
Various data file
Date updated: April 3, 2013
The SUB file extension is associated with the SWAT (Soil & Water Assessment Tool). File defines climatic inputs, tributary channel attributes, and the number and types of HRUs in the subbasin.
SWAT (Microsoft Windows)
Language