Update app.py

app.py

@@ -175,9 +175,9 @@ def infer(url_in,interpolation,fps_output,resize_n,winsize,o_flow):
       mask = cv2.inRange(rgb, lo, hi)
       #m = cv2.bitwise_and(mask_f, mask)
       #diff = np.abs(rgba - bg)
-      fr1[mask>0] = (255,255,255,255)
+      fr2[mask>0] = (255,255,255)
 
-      cv2.imwrite(f"opticalfb{i}.png", fr1)
+      cv2.imwrite(f"opticalfb{i}.png", fr2)
       depth_frames.append(f"opticalfb{i}.png")
         
       i+=1