Created attachment 116978 [details]
when running the command:
gst-launch-1.0 decklinkvideosrc mode =10 connection= 2 ! xvimagesink
gives black screen
SD works fine.
Thanks for the bug report.
However, this is not where we track GStreamer bugs.
Please could you refile this on bugzilla.gnome.org (see http://gstreamer.freedesktop.org/bugs/ ) ? Thanks!