What Is an SRT File?

An SRT file is a plain text file that stores subtitle data. It contains the subtitle text, the start and end time for each subtitle, and a numbered sequence so video players know when to display each one.

SRT stands for SubRip Subtitle. The file extension is .srt.

What Is Inside an SRT File

Each subtitle entry follows the same structure:

1
00:00:04,200 --> 00:00:07,100
This is the first subtitle.

2
00:00:08,500 --> 00:00:11,000
This is the second subtitle.
It can have more than one line.

The structure is:

A sequence number
A timecode in the format hours:minutes:seconds,milliseconds --> hours:minutes:seconds,milliseconds
The subtitle text
A blank line to separate entries

That is the entire format. No special software is needed to open or edit an SRT file. A basic text editor works fine.

Why SRT Is Widely Used

SRT became the standard subtitle format because it is simple and broadly compatible. It works with YouTube, Vimeo, VLC, most video editing software, and the majority of video players that support subtitles.

Its plain text structure also makes it easy to edit by hand or with a subtitle editor if you need to correct timings or fix the text.

SRT in the Subtitle Workflow

A typical subtitle workflow looks like this:

Generate an SRT file from your video, using an AI subtitle tool or a professional subtitler
Review the text and timecodes, and edit if needed
Use the SRT: upload it to your video platform, or burn it permanently into your video

Burning the subtitles into the video produces a version with burned-in subtitles, where the subtitles are always visible regardless of platform or player settings.

How to Get an SRT File from Your Video

Upload your video to the AI Subtitle Generator and our AI will produce an SRT file with professional timing and line breaks. You also receive a video with burned-in subtitles in the same step.

If you already have an SRT file and want to burn it into your video, you can do that with the burn subtitles into video tool directly.