Update app.py

app.py

@@ -7,6 +7,8 @@ st.header("Smart City Cars and Bikes detection")
 st.markdown("Upload a video or select the example")
 
 ## Select video to inference
+file_video = str
+
 f = st.file_uploader(" Upload a video ", type=["mp4"])
 if f is not None:
     tfile = tempfile.NamedTemporaryFile(delete=False)