SRT Files Explained: The Complete Guide to the Most Popular Subtitle Format
SRT (SubRip Subtitle) is the world's most widely supported subtitle format. Here's everything you need to know about creating, editing, and using SRT files.
SRT — SubRip Subtitle — is the world's most universally supported subtitle format. Created in the early 2000s, it's a plain text file containing timestamped dialogue that any video player, streaming platform, or editing tool can read. Here's everything you need to know.
What an SRT File Looks Like
An SRT file is plain text with a simple repeating structure. Each subtitle block has: a sequential number, a timecode in the format HH:MM:SS,mmm --> HH:MM:SS,mmm, the subtitle text (one or more lines), and a blank line to separate blocks. Example: 1 00:00:05,400 --> 00:00:08,200 Hello and welcome to today's video. 2 00:00:08,500 --> 00:00:11,300 Today we're talking about subtitle formats. The simplicity is the key to its universal compatibility.
Where SRT Files Are Used
YouTube: upload SRT via YouTube Studio > Subtitles. YouTube indexes the text for search. Vimeo: supports SRT for both public and private videos. VLC media player: place the SRT file in the same folder as the video with the same filename. Most social platforms (Facebook, LinkedIn) accept SRT for uploaded videos. Video editing software (Premiere Pro, DaVinci Resolve, Final Cut) all import SRT natively. Zingo shows all translated text with timestamps, ready to review before you publish.
Creating and Editing SRT Files
You can create an SRT file in any text editor — just save with the .srt extension. For editing, use Subtitle Edit (free, Windows), Aegisub (free, cross-platform), or online tools like Kapwing. Common edits: adjusting timing when subtitles are out of sync, correcting spelling errors in auto-generated captions, splitting long subtitle blocks into shorter readable chunks. Zingo auto-generates SRT files from video audio, dramatically reducing the time needed for manual creation.