SRT file format: subtitles with timestamps

What an SRT cue contains

1. A sequence number such as 1, increasing for each cue.
2. A start and end time separated by -->. SRT uses hours, minutes, seconds and a comma before three millisecond digits: HH:MM:SS,mmm.
3. Subtitle text on the next line. A blank line separates this cue from the next one.

1
00:00:00,000 --> 00:00:02,450
Welcome back.

2
00:00:02,500 --> 00:00:05,100
Let us begin.

This is an illustrative two-cue example, not a transcript of a particular source. Sonora generates the same numbering and timestamp syntax from the segments returned for your own completed transcript.

For an independent format reference, the Library of Congress describes SRT as a text-based subtitle format with numbered cues and start/end times. The W3C WebVTT specification documents the separate timed-text format used for web captions.

How to export an SRT with Sonora

1. Open the Sonora transcription tool and paste a public HTTPS media URL supported by Supadata. Local file uploads are not available.
2. Wait for a completed transcript. Sonora may use available captions or a provider-generated transcript; availability depends on the source and provider.
3. Review and, if needed, edit the transcript text. Choose SRT from the export options to download transcript.srt.

Sonora lets you edit transcript text, not cue timing. The start and end times come from the provider's segments. Check synchronization in your video editor and adjust timing there if needed.

SRT, VTT or TXT?

SRT

Numbered cues with comma-separated milliseconds for apps that accept SubRip subtitles.

VTT

Timed cues with a WEBVTT header and dot-separated milliseconds for WebVTT-capable players.

TXT

Readable transcript lines with start-time markers, without subtitle cue ranges.

If a destination app rejects an SRT, first confirm that it accepts the format and that the exported file has the expected .srt extension. Editing subtitle text and timing in the destination app may still be necessary.

Starting from an online video instead? The YouTube transcript guide explains how to find existing captions and when Sonora can export a text or subtitle file.