perf: reduce buffer size to lower latency

Author: robgee86

src/arduino/app_peripherals/camera/ip_camera.py

@@ -76,9 +76,10 @@ def _open_camera(self) -> None:
             self._test_http_connectivity()
 
         self._cap = cv2.VideoCapture(url)
-        self._cap.set(cv2.CAP_PROP_BUFFERSIZE, 1)  # Reduce buffer to get latest frames
         if not self._cap.isOpened():
             raise CameraOpenError(f"Failed to open IP camera: {self.url}")
+        
+        self._cap.set(cv2.CAP_PROP_BUFFERSIZE, 1)  # Reduce buffer to minimize latency
 
         # Test by reading one frame
         ret, frame = self._cap.read()

src/arduino/app_peripherals/camera/v4l_camera.py

@@ -126,7 +126,9 @@ def _open_camera(self) -> None:
         self._cap = cv2.VideoCapture(self.device_index)
         if not self._cap.isOpened():
             raise CameraOpenError(f"Failed to open V4L camera {self.device_index}")
-
+        
+        self._cap.set(cv2.CAP_PROP_BUFFERSIZE, 1)  # Reduce buffer to minimize latency
+        
         # Set resolution if specified
         if self.resolution and self.resolution[0] and self.resolution[1]:
             self._cap.set(cv2.CAP_PROP_FRAME_WIDTH, self.resolution[0])