[Bug 22789] New: Data model for line position should no include overlap avoidance

https://www.w3.org/Bugs/Public/show_bug.cgi?id=22789

            Bug ID: 22789
           Summary: Data model for line position should no include overlap
                    avoidance
    Classification: Unclassified
           Product: TextTracks CG
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: WebVTT
          Assignee: silviapfeiffer1@gmail.com
          Reporter: silviapfeiffer1@gmail.com
        QA Contact: dave.null@w3.org
                CC: mike@w3.org, public-texttracks@w3.org

The data model for line positioning is defined in:
http://dev.w3.org/html5/webvtt/#dfn-text-track-cue-line-position

If line is auto (i.e. not set), then the line position is determined based on
the other text tracks that are showing.

I have several issues with this approach:

Firstly, it assumes that each cue is only one line long and thus adds "1" to
the line position of every track. This is a faulty assumption.

Secondly, it would be better to have the same overlap avoidance that applies to
multiple cues within a track applied to all cues that are active at a certain
point in time.

I'm therefore suggesting to remove steps 4 - 10 of that algorithm.

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Received on Wednesday, 24 July 2013 06:26:38 UTC