Update app.py

app.py

@@ -65,7 +65,7 @@ def warp_image(im, flow):
     h, w = flow.shape[:2]
     flow[:,:,0] += np.arange(w)
     flow[:,:,1] += np.arange(h)[:,np.newaxis]
-    prevImg = cv2.remap(curImg, flow, None, cv.INTER_LINEAR)
+    prevImg = cv2.remap(im, flow, None, cv.INTER_LINEAR)
 
 def infer():
     video_url = "https://download.pytorch.org/tutorial/pexelscom_pavel_danilyuk_basketball_hd.mp4"