[gstreamer-bugs] [Bug 584811] New: playbin2's get-text-tags sometimes fails in text stream 0

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: git
           Summary: playbin2's get-text-tags sometimes fails in text stream
                    0
           Product: GStreamer
           Version: git
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: andreas.frisch at multimedia-labs.de
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


Please describe the problem:
i got an mkv container with two subtitle streams from a customer today out of
which the first track was sometimes being reported as "undefined" language in
our enigma2 dreambox gui. i've tracked down the problem to the line
g_signal_emit_by_name (m_gst_playbin, "get-text-tags", i, &tags); which
_sometimes_ fails to assign the tags correctly, even though the message had
shown up before:
eServiceMP3::gst_message from matroskademux11: taglist,
language-code=(string)dut, source-pad=(GstPad)"\(GstPad\)\ subtitle_00";        
eServiceMP3::gst_message from matroskademux11: taglist,
language-code=(string)tur, source-pad=(GstPad)"\(GstPad\)\ subtitle_01";

Steps to reproduce:
i made a minimal example, which will be attached and also the beginning of the
movie container
1. text-tags "file:///hdd/movie/Night At The Museum_sample.mkv"


Actual results:
root at dm8000:/testProgs# ./text-tags "file:///hdd/movie/Night At The
Museum_sample.mkv"
eServiceMP3::async-done - 1 video, 1 audio, 2 subtitle
eServiceMP3::audio stream=0 codec=AC-3 audio language=eng
eServiceMP3::subtitle stream=0 language=tur
eServiceMP3::subtitle stream=1 language=dut

root at dm8000:/testProgs# ./text-tags "file:///hdd/movie/Night At The
Museum_sample.mkv"
eServiceMP3::async-done - 1 video, 1 audio, 2 subtitle
eServiceMP3::audio stream=0 codec=AC-3 audio language=eng
eServiceMP3::subtitle stream=0 language=und
eServiceMP3::subtitle stream=1 language=dut

root at dm8000:/testProgs# ./text-tags "file:///hdd/movie/Night At The
Museum_sample.mkv"
eServiceMP3::async-done - 1 video, 1 audio, 2 subtitle
eServiceMP3::audio stream=0 codec=AC-3 audio language=eng
eServiceMP3::subtitle stream=0 language=tur
eServiceMP3::subtitle stream=1 language=dut

root at dm8000:/testProgs# ./text-tags "file:///hdd/movie/Night At The
Museum_sample.mkv"
eServiceMP3::async-done - 1 video, 1 audio, 2 subtitle
eServiceMP3::audio stream=0 codec=AC-3 audio language=eng
eServiceMP3::subtitle stream=0 language=tur
eServiceMP3::subtitle stream=1 language=dut

root at dm8000:/testProgs# ./text-tags "file:///hdd/movie/Night At The
Museum_sample.mkv"
eServiceMP3::async-done - 1 video, 1 audio, 2 subtitle
eServiceMP3::audio stream=0 codec=AC-3 audio language=eng
eServiceMP3::subtitle stream=0 language=und
eServiceMP3::subtitle stream=1 language=dut


Expected results:
always process the stream tags correctly

Does this happen every time?
~ 50%

Other information:


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