deinterlace: force deinterlacing in "interlaced" mode
deinterlace: force deinterlacing in "interlaced" mode

https://bugzilla.gnome.org/show_bug.cgi?id=697467

Distrotech/gst-plugins-good,Distrotech/gst-plugins-good,Distrotech/gst-plugins-good,Distrotech/gst-plugins-good,Distrotech/gst-plugins-good