DONT ADD ANYTHING HERE!

  1. The WebVTT (Web Video Text Tracks) format is intended for marking up external text track resources in connection with with the track element
  2. WebVTT files provide
    1. captions
    2. subtitles
    3. text video descriptions
    4. chapters for content navigation
    5. any form of metadata that is time-aligned with audio or video content

Example

A sample WebVTT file that captions an interview: 
    WEBVTT

    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

References

MDN: WebVTT API
WebVTT: The Web Video Text Tracks Format (W3C Draft)
YouTube: How to Create a Web VTT File for Subtitles and Captions | Rev Explains