decklink start up to separate factory

src/app/AppConfig.cpp

@@ -26,6 +26,8 @@ AppConfig DefaultAppConfig()
 	config.inputFrameRate = "59.94";
 	config.outputVideoFormat = "1080p";
 	config.outputFrameRate = "59.94";
+	config.videoInputBackend = "decklink";
+	config.videoOutputBackend = "decklink";
 	config.autoReload = true;
 	config.maxTemporalHistoryFrames = 12;
 	config.previewEnabled = false;