Add two properties (keyer-mode and keyer-level) to control the built-in hardware keyer of Decklink cards. https://bugzilla.gnome.org/show_bug.cgi?id=773660
Add two properties (keyer-mode and keyer-level) to control the built-in hardware keyer of Decklink cards. https://bugzilla.gnome.org/show_bug.cgi?id=773660