-PREFERRED_VERSION_gstreamer1.0-libav = "1.6.3"
-PREFERRED_VERSION_gstreamer1.0-plugins-base = "1.6.3"
-PREFERRED_VERSION_gstreamer1.0-plugins-bad = "1.6.3"
-PREFERRED_VERSION_gstreamer1.0-plugins-good = "1.6.3"
-PREFERRED_VERSION_gstreamer1.0-plugins-ugly = "1.6.3"
-PREFERRED_VERSION_gstreamer1.0-plugins-vspfilter = "1.0%"