Update app.py

app.py

@@ -127,8 +127,9 @@ def infer(url_in,interpolation,fps_output,resize_n,winsize,o_flow):
             hi = np.array([16,16,16])
             mask_f = cv2.inRange(diff_f, lo, hi)
             mask = cv2.inRange(diff, lo, hi)
-            rgb[mask>0 and mask_f==0] = (255,255,255)
-            next_rgb[mask>0 and mask_f==0] = (255,255,255)
+            m = cv2.bitwise_and(mask_f, mask)
+            rgb[m>0] = (255,255,255)
+            next_rgb[m>0] = (255,255,255)
             cv2.imwrite(frame, rgb)
             cv2.imwrite(next_frame, next_rgb)