obs-transitions: default size factors when track matte is disabled

plugins/obs-transitions/transition-stinger.c

@@ -89,12 +89,20 @@ static void stinger_update(void *data, obs_data_t *settings)
 	s->track_matte_enabled =
 		obs_data_get_bool(settings, "track_matte_enabled");
 	s->matte_layout = obs_data_get_int(settings, "track_matte_layout");
-	s->matte_width_factor =
-		(s->matte_layout == MATTE_LAYOUT_HORIZONTAL ? 2.0f : 1.0f);
-	s->matte_height_factor =
-		(s->matte_layout == MATTE_LAYOUT_VERTICAL ? 2.0f : 1.0f);
 	s->invert_matte = obs_data_get_bool(settings, "invert_matte");
 
+	s->matte_width_factor = 1.0f;
+	s->matte_height_factor = 1.0f;
+	if (s->track_matte_enabled) {
+		if (s->matte_layout == MATTE_LAYOUT_HORIZONTAL) {
+			s->matte_width_factor = 2.0f;
+		}
+
+		if (s->matte_layout == MATTE_LAYOUT_VERTICAL) {
+			s->matte_height_factor = 2.0f;
+		}
+	}
+
 	if (s->matte_source) {
 		obs_source_release(s->matte_source);
 		s->matte_source = NULL;