You can create an SRT file with any text editor in existence – you need to install it in your gadget. For instance, Windows users can create a file using Notepad, while Mac users can use TextEdit.
The catch?
Format the text correctly to include:
[Number of the subtitles section]
[The beginning time of the subtitle display] – [The ending time of the subtitle display]
[Subtitle]
The timestamp should include: [hours]: [minutes]: [seconds], [milliseconds]
Note, you must follow the right format for the SRT files to work.
Once done, convert the SRT file to plain text and save it as an SRT file (i.e. change the .txt extension into .srt). To convert the SRT file into plain text, highlight the content, then go to Format (usually on the top bar) and hit Make Plain Text. With the changes saved, you can now add the SRT to MP4 on Mac.
In addition to text editors, you can create subtitles using YouTube and other Video Creators or MP4 subtitlers.