Fyrd/caniuse — pull request #515 by mpopp75 (2014-04-15 03:01:55+00:00)
Title: WebVTT disabled in Firefox 29 and 30

WebVTT was also disabled in Firefox 29 & 30, now targeted for Firefox 31:

https://bugzilla.mozilla.org/show_bug.cgi?id=981280