sample.vtt

WEBVTT

00:01.000 --> 00:04.000
This is subtitle at 1sec to 4sec.

00:05.000 --> 00:09.000
— These are split subtitles from marker of 5sec.
— Upto 9sec, split equally.

00:10.000 --> 00:14.000
The text could be as longs as you want or as small as you want, file starts with WEBVTT marker. Can hold comments starting with NOTE. The lines above with --> are time markers for when subtitles need to be displayed.

NOTE say what