Limited Availability

WebVTT regions

WebVTT regions set the areas of the video where captions or subtitles should be rendered, such as placing roll-up captions used for live captions.

Baseline Status: This feature is currently Limited (not yet Baseline). Latest engine implementation shipped on Apr 26, 2021.

Desktop Browser Engine Support

Google Chrome

—

Unsupported

Mozilla Firefox

59

Supported

Apple Safari

14.1

Supported

Microsoft Edge

—

Unsupported

Mobile Browser Engine Support

Chrome Android

—

Firefox Android

59

Safari iOS

14.5

Specifications and References

MDN Browser Compat Data Keys: