[Bug 782697] New: discoverer: mp4 track count is wrong

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=782697

            Bug ID: 782697
           Summary: discoverer: mp4 track count is wrong
    Classification: Platform
           Product: GStreamer
           Version: 1.12.0
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: fzwoch at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 351977
  --> https://bugzilla.gnome.org/attachment.cgi?id=351977&action=edit
Gstreamer 1.12

GstDiscoverer lists an unexpected track count for my MP4 file. Unfortunately I
could not get clearance to attach the MP4 file - else I would have.

The MP4 file was created with MP4Box:

MP4Box -add "stream.265":forcesync -add "stream2.265":forcesync out.mp4

The HEVC streams are Bluray compatible streams.

I will attach 3 logs:

a) gst-discoverer-1.0 -v with GStreamer 1.12
b) gst-discoverer-1.0 -v with GStreamer 1.10
c) The output of MP4Box -info out.mp4

As far as I can tell GstDiscoverer reports 4 visual tracks although only 2
tracks should be found.

I can actually use qtdemux and display both tracks (I haven't checked if it
exposes more than 2 tracks though).

I may be able to add an MP4 file if I can get access to some bitstreams that
may be distributed.

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