[Bug 673378] New: error when parsing output of multipart demux

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=673378
  GStreamer | gst-plugins-bad | 0.10.19

           Summary: error when parsing output of multipart demux
    Classification: Platform
           Product: GStreamer
           Version: 0.10.19
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: jspurny at seznam.cz
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


I want to parse mjpeg stream because I want the JPEG images. I tried to use
jpegparse and it works, however I'm getting a lot of warnings (I think there's
one warning for every frame).

This demonstrates the behaviour (the IP address is public, so it should work
everywhere):

--------------------------------
$ gst-launch -e souphttpsrc
location='http://c-cam.uchicago.edu/mjpg/video.mjpg' ! multipartdemux  !
jpegparse ! fakesink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...

(gst-launch-0.10:21271): GStreamer-WARNING **: Trying to set string on taglist
field 'comment', but string is not valid UTF-8. Please file a bug.
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock

(gst-launch-0.10:21271): GStreamer-WARNING **: Trying to set string on taglist
field 'comment', but string is not valid UTF-8. Please file a bug.
...
--------------------------------

When I have used 'jpegparse' in a program and actually read the tags, I got
just some binary nonsense.

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