[Webkit-unassigned] [Bug 92939] New: Negative timestamps for TextTrackCues should not be allowed

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=92939

           Summary: Negative timestamps for TextTrackCues should not be
                    allowed
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: annacc at chromium.org
                CC: eric.carlson at apple.com, silviapf at chromium.org
            Blocks: 43668


Negative timestamps are currently allowed in the TextTrackCue JavaScript constructor, leading to crashes when that cue is added via TextTrack.addCue().  Negative timestamps are not allowed in WebVTT files (the parser throws them out), so I think they should not be allowed when cues are dynamically added either.

For more info on the crashes, see http://code.google.com/p/chromium/issues/detail?id=139240

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