WebVTT - Web Video Text Tracks

- CR

Format for marking up text captions for multimedia resources.

Chrome

  1. 4 - 22: Not supported
  2. 23 - 143: Supported
  3. 144: Supported
  4. 145 - 147: Supported

Edge

  1. 12 - 143: Supported
  2. 144: Supported

Safari

  1. 3.1 - 5.1: Not supported
  2. 6 - 26.1: Supported
  3. 26.2: Supported
  4. 26.3 - TP: Supported

Firefox

  1. 2 - 23: Not supported
  2. 24 - 30: Disabled by default
  3. 31 - 54: Supported
  4. 55 - 146: Supported
  5. 147: Supported
  6. 148 - 150: Supported

Opera

  1. 9 - 12.1: Not supported
  2. 15 - 124: Supported
  3. 125: Supported

IE

  1. 5.5 - 9: Not supported
  2. 10: Supported
  3. 11: Supported

Chrome for Android

  1. 144: Supported

Safari on iOS

  1. 3.2 - 6.1: Not supported
  2. 7 - 26.1: Supported
  3. 26.2: Supported
  4. 26.3: Supported

Samsung Internet

  1. 4 - 28: Supported
  2. 29: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 80: Supported

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 4.3: Not supported
  2. 4.4 - 4.4.4: Supported
  3. 144: Supported

Firefox for Android

  1. 147: Supported

QQ Browser

  1. 14.9: Supported

Baidu Browser

  1. 13.52: Supported

KaiOS Browser

  1. 2.5: Supported
  2. 3: Supported

WebVTT must be used with the <track> element.

Resources:
An Introduction to WebVTT and track
MDN Web Docs - WebVTT
Getting Started With the Track Element