WebVTT

WebVTT (Web Video Text Tracks) — стандарт субтитров, предложенный World Wide Web Consortium (W3C) для использования в HTML5 с помощью элемента <track>.

WebVTT
Расширение	.vtt
MIME-тип	text/vtt
Опубликован	10 августа 2010; 15 лет назад (2010-08-10)[1]
Последний выпуск	4 апреля 2019; 6 лет назад (2019-04-04)
Тип формата	Timed text
Стандарт(ы)	W3C WebVTT
Открытый формат?	Да
Сайт	w3c.github.io/web… (англ.)

Поддержка

Browser Support^[2][3]

Браузер	Тэги в репликах	Позиционирование реплик	CSS-стили
Chrome	35+
Android stock browser	5.0+
Opera	22+
Safari	7+ (iOS: 8+)
Firefox	31+ (Android: 32+)		н/д
Microsoft Edge	12+	н/д
Internet Explorer	10+	н/д

Пример WebVTT-формата

WEBVTT 
Kind: captions
Language: en

00:09.000 --> 00:11.000
<v Roger Bingham>We are in New York City

00:11.000 --> 00:13.000
<v Roger Bingham>We are in New York City

00:13.000 --> 00:16.000
<v Roger Bingham>We're actually at the Lucern Hotel, just down the street

00:16.000 --> 00:18.000
<v Roger Bingham>from the American Museum of Natural History

00:18.000 --> 00:20.000
<v Roger Bingham>And with me is Neil deGrasse Tyson

00:20.000 --> 00:22.000
<v Roger Bingham>Astrophysicist, Director of the Hayden Planetarium

00:22.000 --> 00:24.000
<v Roger Bingham>at the AMNH.

00:24.000 --> 00:26.000
<v Roger Bingham>Thank you for walking down here.

00:27.000 --> 00:30.000
<v Roger Bingham>And I want to do a follow-up on the last conversation we did.

00:30.000 --> 00:31.500 align:end size:50%
<v Roger Bingham>When we e-mailed—

00:30.500 --> 00:32.500 align:start size:50%
<v Neil deGrasse Tyson>Didn't we talk about enough in that conversation?

00:32.000 --> 00:35.500 align:end size:50%
<v Roger Bingham>No! No no no no; 'cos 'cos obviously 'cos

00:32.500 --> 00:33.500 align:start size:50%
<v Neil deGrasse Tyson><i>Laughs</i>

00:35.500 --> 00:38.000
<v Roger Bingham>You know I'm so excited my glasses are falling off here.

^[4]