[Bug 681015] New: Discoverer deadlock race on video files

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=681015
  GStreamer | don't know | git

           Summary: Discoverer deadlock race on video files
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: blocker
          Priority: Normal
         Component: don't know
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: mail at renestadler.de
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=220097)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=220097)
Test script

Running gst-discoverer-1.0 on some video files will sometimes deadlock. It can
take a while to reproduce, but it's really there (just run it in an endless
loop). Using discoverer from C seems to be the hardest way to reproduce
(probably why such a bug is there).

Jeff wrote a little python script that does the same. It is a bit easier to
reproduce with that. Probably because Python.

The sure way to reproduce is however with pitivi. The previewer in the file
chooser triggers it 100% of the time. When we disabled that, the discoverer run
afterwards has maybe a 1 in 20 chance of it *working* (so it will work rarely
actually). Use the pygi branch from git://github.com/nekohayo/pitivi.git if
needed.

BTW, doesn't matter if discoverer runs async or not.

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