SRT vs VTT: Which Subtitle Format Should You Use?
Use the format your destination accepts. SRT is a simple numbered subtitle format; WebVTT is designed for timed web text tracks. Both store start times, end times, and cue text, but a filename change does not convert their syntax.
By SceneDub · Published · Editorial methodology
Open SRT to VTTThe visible differences
A WebVTT file begins with WEBVTT and uses periods before milliseconds. Typical SRT exports use numbered cues and commas before milliseconds. The worked example below shows exactly what SceneDub changes. UTF-8 text is a practical choice for preserving accented characters. Keep blank lines between cues and avoid word processors that introduce document formatting.
Conversion has a fidelity boundary
SceneDub transfers basic timing and text. Format-specific regions, comments, style blocks, and positioning may be omitted or unsupported in the output. If a subtitle file uses elaborate presentation, archive the original and test a copy. A successful parse only proves the captions were read; it does not prove every styling choice survived.
Conversion is separate from recognition
If you already have timed captions, a local converter is the direct route. You do not need to upload the audio for another transcription. If all you have is a recording, generate timed captions first. If you have plain prose without timestamps, neither changing the extension nor converting subtitle syntax can discover when each sentence was spoken.
The workflow
- Check whether the destination requests SRT or WebVTT.
- Convert a copy and compare the first and last cues.
- Preview the converted track with the source video.
SRT to WebVTT: same timing, different syntax
Input / starting point
1
00:00:01,250 --> 00:00:03,500
Welcome to the recording.Output / result
WEBVTT
00:00:01.250 --> 00:00:03.500
Welcome to the recording.This output is generated by the same converter used in the tool. Renaming the extension would not perform this conversion.
