[Bug 25737] New: [WebVTT] file using only nested cues definition is too lax

https://www.w3.org/Bugs/Public/show_bug.cgi?id=25737

            Bug ID: 25737
           Summary: [WebVTT] file using only nested cues definition is too
                    lax
           Product: TextTracks CG
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: WebVTT
          Assignee: dave.null@w3.org
          Reporter: philipj@opera.com
        QA Contact: public-texttracks@w3.org
                CC: philipj@opera.com, silviapfeiffer1@gmail.com

http://dev.w3.org/html5/webvtt/#dfn-webvtt-file-using-only-nested-cues

> given any two cues cue1 and cue2 with start and end time offsets
> (x1, y1) and (x2, y2) respectively,
>
> either cue1 lies fully within cue2, i.e. x1 ≥ x2 and y1 ≤ y2
> or cue1 fully contains cue2, i.e. x1 ≤ x2 and y1 ≥ y2.

The following file would match the definition:

WEBVTT

00:00.000 --> 00:01.000
A

00:00.000 --> 00:01.000
B

Yet, neither cue is nested in the other, and a tree of chapters cannot be
constructed from the file.

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Received on Friday, 16 May 2014 08:12:00 UTC