[Bug 765311] player: Provide better error messages and error handling

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=765311
Bug 765311 depends on bug 756806, which changed state.

Bug 756806 Summary: message: Add extra information fields to error/warning/info messages
https://bugzilla.gnome.org/show_bug.cgi?id=756806

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.