[Webkit-unassigned] [Bug 122000] New: [GStreamer] Support "chapter" text tracks

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=122000

           Summary: [GStreamer] Support "chapter" text tracks
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Media Elements
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: b.long at cablelabs.com


It looks like the way to do this is with GstToc:

http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstToc.html#gst-toc-entry-get-uid

We can get these from GstMessages:

http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMessage.html#gst-message-parse-toc

It looks like Matroska currently has the best support, but there's a TODO saying mp4 should support it too.

mkvmerge can create these:

http://www.bunkus.org/videotools/mkvtoolnix/doc/mkvmerge.html#mkvmerge.chapters

I have a *very* basic patch (adding chapters to counting-subtitled-srt.mkv and printing out chapter contents) here. It's not even remotely done, but it might be useful for someone else who wants to finish this:

https://github.com/cablelabs/webkit/commits/ruih/handle-table-of-contents

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