fix a silly bug in command line processing

annotation_pipeline/ingest.cpp

@@ -156,7 +156,7 @@ main (int argc, char *argv[])
 
   /* Initialize GStreamer */
   if (argc > 2)
-	  gst_debug_set_threshold_from_string(argv[2], TRUE);
+	  gst_debug_set_threshold_from_string(argv[3], TRUE);
   gst_init (&argc, &argv);
 
   /* Initialize our data structure */