...
- SubRip caption files are named with the extension .SRT. This format is supported by most software video players and subtitle creation programs. The time format used is hours:minutes:seconds:milliseconds, with the milliseconds field precise to three decimal places. The purpose of srt subtitle file is to use it with desired movie file together to display subtitles when you play video file by any player supporting srt subtitles. If your video doesn’t include any subtitles, you can create and add a .srt file to this video folder, then you will be able to get a video with subtitles by converting this video using Any Video Converter Professional/Ultimateyour video.
How to create SRT file:
Add subtitle in Vimeo: https://vimeo.com/help/faq/managing-your-videos/captions-and-subtitles#what-caption-and-subtitle-file-formats-does-vimeo-support
...