[Bug 704007] New: qtdemux skips disabled tracks

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=704007
  GStreamer | gst-plugins-good | git

           Summary: qtdemux skips disabled tracks
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: matej.knopp at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=248929)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=248929)
Patch

This behavior has been added to handle chapter tracks (which were otherwise
displayed as subtitle tracks), but it is not proper way to handle chapter
tracks. Also it is inconsistent with both VLC and QuickTime (X).

VLC has tracks with disabled flags disabled as default but allows to enable
such track.
QuickTime does the same for subtitle track.

Attached patch sets GST_STREAM_FLAG_UNSELECT flag on stream instead of ignoring
it completely and detects chapters track using the CHAP atom.

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