SUB File - opening and understanding

Did your computer fail to open a SUB file? We explain what they are used for and recommend software that we know can open or otherwise handle your .SUB files.

What is a SUB file?

Files that contain the .sub file extension are usually files that store information about movie subtitles. These files contain data about the movie subtitles, such as the subtitle text, the point at which each subtitle should be displayed and information about the corresponding video file.

SUB files are most often assigned by the CaSat Suite subtitle software and the files that are saved with the .sub extension are usually used for the subtitles in DivX formatted movies.

It is important to note that the SUB file does not contain any actual video data. Just the references for the subtitle information.

How to open SUB files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension SUB for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 10 different SUB openers which you will find listed below.

Suggest another file format using extension SUB

While we know of one file format using the .SUB file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .SUB file.

Various viewers for this file format

These apps are known to open certain types of SUB files. Remember, different programs may use SUB files for different purposes, so you may need to try out a few of them to be able to open your specific file.

WinRARWinRARUser submitted
Final Media PlayerFinal Media PlayerUser submitted
Free File ViewerFree File ViewerUser submitted
KMPlayerKMPlayerUser submitted
PotPlayerPotPlayerUser submitted
ChocoPlayerChocoPlayerUser submitted
ALShowALShowUser submitted
GOM PlayerGOM PlayerUser submitted
AegisubAegisubUser submitted
We have not verified any software that we know for certain will work with SUB-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with SUB-files. If you know one, please use the 'Suggest a program' link below and tell us about it!