24674 2014-02-15 03:36:34 +0000 Cue and Region identifiers should be specified as unique identifiers 2014-09-09 10:25:31 +0000 1 1 1 Unclassified TextTracks CG WebVTT unspecified PC All RESOLVED FIXED v1 P2 normal --- 1 silviapfeiffer1 dave.null philipj silviapfeiffer1 zcorpan public-texttracks oldest_to_newest 100669 0 silviapfeiffer1 2014-02-15 03:36:34 +0000 It's not explicit in the spec that a WebVTT cue identifier and a WebVTT region identifier are supposed to be unique. But they should be - otherwise the CSS selection via ::cue(#identifier) makes no sense. 100763 1 zcorpan 2014-02-17 16:17:40 +0000 Why does it not make sense? Selectors support duplicate IDs fine. 100781 2 silviapfeiffer1 2014-02-18 01:07:48 +0000 Browsers will deal in CSS and HTML with multiple id attributes having the same value, but it's not conformant, not in HTML [1] and not in CSS [2]. [1] http://www.w3.org/html/wg/drafts/html/master/dom.html#the-id-attribute [2] http://www.w3.org/TR/selectors/#id-selectors I don't see why WebVTT should be different. WebVTT cue identifiers should also be unique. 111253 3 silviapfeiffer1 2014-09-09 10:25:31 +0000 Fixed in commit: https://github.com/w3c/webvtt/commit/8787b2532d0902525c2db5a8b1297c9e40809ef0