[Bug 763647] New: mpegtsmux doesn't keep language code from the incoming audio stream

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=763647

            Bug ID: 763647
           Summary: mpegtsmux doesn't keep language code from the incoming
                    audio stream
    Classification: Platform
           Product: GStreamer
           Version: 1.7.91
                OS: All
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: mguinzbourg at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

I'm trying to pass audio stream language code from the source 
mpegts  to output mpegts stream. The language code is lost while 
demuxing-transcoding-muxing process. I traced the problem in the code 
to the following: in the tsmuxstream.c, line 745 (snip) (which 
suppose to write descriptor to the pmt table) the 
language code is simply ignored for audio type ac3 and for other 
audio types the descriptor not even created. Can anybody look at this 
problem or what's involved in fixing this part. This is critical for 
my project to have audio descriptors with the language code. Thanks!

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