Package dependencies cannot be resolved.
This error could be caused by required additional software packages which are missing or not installable. Furthermore there could be a conflict between software packages which are not allowed to be installed at the same time.
The following packages have unmet dependencies:
vlc: Depends: vlc-nox (= 2.1.2-2build2) but 2.1.2-2build2 is to be installed
Depends: libc6 (>= 2.15) but 2.19-0ubuntu6.5 is to be installed
Depends: libfreetype6 (>= 2.2.1) but 2.5.2-1ubuntu2.3 is to be installed
Depends: libgcc1 (>= 1:4.1.1) but 1:4.9.1-0ubuntu1 is to be installed
Depends: libgl1 but it is a virtual package
Depends: libqtcore4 (>= 4:4.8.0) but 4:4.8.5+git192-g085f851+dfsg-2ubuntu4 is to be installed
Depends: libqtgui4 (>= 4:4.8.0) but 4:4.8.5+git192-g085f851+dfsg-2ubuntu4 is to be installed
Depends: libsdl1.2debian (>= 1.2.11) but it is not going to be installed
Depends: libstdc++6 (>= 4.6) but 4.8.2-19ubuntu1 is to be installed
Depends: libxcb-composite0 but it is not going to be installed
Depends: libxcb-xv0 (>= 1.2) but it is not going to be installed
Depends: zlib1g (>= 1:1.2.3.3) but 1:1.2.8.dfsg-1ubuntu1 is to be installed