diff --git a/frigate/config.py b/frigate/config.py
index e3db81a68..a5eda7b9c 100644
--- a/frigate/config.py
+++ b/frigate/config.py
@@ -120,13 +120,11 @@ class RuntimeMotionConfig(MotionConfig):
         frame_shape = config.get("frame_shape", (1, 1))
 
         if "frame_height" not in config:
-            config["frame_height"] = max(frame_shape[0] // 6, 180)
+            config["frame_height"] = frame_shape[0] // 6
 
         if "contour_area" not in config:
             frame_width = frame_shape[1] * config["frame_height"] / frame_shape[0]
-            config["contour_area"] = (
-                config["frame_height"] * frame_width * 0.00173611111
-            )
+            config["contour_area"] = config["frame_height"] * frame_width * 0.004
 
         mask = config.get("mask", "")
         config["raw_mask"] = mask