How to Export Video Captions as an SRT File

SRT (SubRip Text) is the most widely supported subtitle file format in the world. It is a plain text file containing numbered subtitle blocks, each with a start time, end time, and caption text. The format is simple by design: it was created in 1997 and has remained the standard ever since because its simplicity makes it compatible with virtually every video platform and player. An SRT file looks like this in plain text: each block starts with a number, followed by a timing line like 00:00:01,500 to 00:00:03,200, followed by the caption text, then a blank line before the next block. When should you use SRT instead of burned-in captions? Use SRT when you are uploading to a platform that renders subtitles server-side and gives you styling control, like YouTube's subtitle manager or Vimeo. Use SRT when your content will be translated into multiple languages and you want separate SRT files per language. Use SRT when accessibility compliance requires toggleable captions that viewers can enable or disable. Use burned-in MP4 when you are posting to social media platforms that do not support SRT upload, when you want full control over visual styling, or when you need the same caption look across every platform without relying on the platform's subtitle renderer.

SRT is the most universal format, but several others exist and are required by specific platforms. VTT (Web Video Text Tracks) is the standard format for HTML5 video players and is used by Wistia, JW Player, and some streaming platforms. VTT supports basic styling tags that SRT does not, including color, position, and alignment. SBV (SubViewer) is the format required by YouTube's legacy subtitle upload system. YouTube now accepts SRT, VTT, and several other formats, so SBV is rarely needed. ASS and SSA are advanced subtitle formats used in anime fansub communities that support complex styling, but they are not widely supported by mainstream platforms. For most creators, SRT covers 95% of use cases. If a specific platform requires a different format, most online tools can convert SRT to VTT or SBV in seconds. VideoCaptions.AI exports standard SRT files with millisecond-accurate timing derived from word-level AI timestamps, making the exported file compatible with YouTube's subtitle manager, Vimeo, Wistia, and any other platform that accepts the SRT standard.