An SRT or Subrip format is a caption file that is read by video player programs such as Windows Media Player and iTunes. Subrip format files are more notably known as subtitles. These subtitles can be opened with special programs that are made to run them in conjunction with the movie you are watching. Nevertheless, it is possible to just open and edit the file with any text editor program such as Notepad or WordPad.
Locate the SRT file that you want to open and edit.
Right-click on the file and go to Properties.
Click on the Change button that is in the General tab of the file's properties.
Select Notepad or WordPad in the Open With window. Select the Always use the selected program to open this kind of file option to make sure that the program you choose opens all files with SRT file extension.
Click OK. Double-click on the file. The SRT file will open up in either Notepad or WordPad. You will then be able to read and edit the subtitles.
Save the SRT file and load up the video into your video player and then drag the respective SRT file into the video window. The player will accept the file and assign the subtitles to the video that is being watched.