make stationary_threshold configurable

frigate/config.py

@@ -199,6 +199,11 @@ class DetectConfig(FrigateBaseModel):
         default_factory=StationaryConfig,
         title="Stationary objects config.",
     )
+    stationary_threshold: Optional[int] = Field(
+        default=10,
+        title="Number of frames without a position change for an object to be considered stationary",
+        ge=1,
+    )
 
 
 class FilterConfig(FrigateBaseModel):

frigate/objects.py

@@ -78,9 +78,9 @@ class ObjectTracker:
             }
             return False
 
-        # if there are less than 10 entries for the position, add the bounding box
+        # if there are less than stationary_threshold entries for the position, add the bounding box
         # and recompute the position box
-        if len(position["xmins"]) < 10:
+        if len(position["xmins"]) < self.detect_config.stationary_threshold:
             position["xmins"].append(xmin)
             position["ymins"].append(ymin)
             position["xmaxs"].append(xmax)

frigate/video.py

@@ -507,8 +507,8 @@ def process_frames(
             stationary_object_ids = [
                 obj["id"]
                 for obj in object_tracker.tracked_objects.values()
-                # if there hasn't been motion for 10 frames
-                if obj["motionless_count"] >= 10
+                # if there hasn't been motion for N frames
+                if obj["motionless_count"] >= detect_config.stationary_threshold
                 # and it isn't due for a periodic check
                 and (
                     detect_config.stationary.interval == 0