"I got the same bug and can confirm that removing the frei0r-plugins solves this issue.
But removing gstreamer0.10-plugins-bad solves it too, as described in bug#471690 , without having to remove the frei0r-plugins ( Openshot depends on it ).
So it seems that these two plugin packages ( frei0r-plugins and gstreamer0.10-plugins-bad ) can not co-exist without causing trouble."
It must be either frei0r-plugins or gstreamer0.10-plugins-bad who is causing this bug.
As i wrote in bug#470564
"I got the same bug and can confirm that removing the frei0r-plugins solves this issue.
But removing gstreamer0. 10-plugins- bad solves it too, as described in bug#471690 , without having to remove the frei0r-plugins ( Openshot depends on it ).
So it seems that these two plugin packages ( frei0r-plugins and gstreamer0. 10-plugins- bad ) can not co-exist without causing trouble."
It must be either frei0r-plugins or gstreamer0. 10-plugins- bad who is causing this bug.