Update app.py

app.py

@@ -98,6 +98,7 @@ def prediction(vname):
             
 def main():
     vname, frame0 = starter()
+    st.write('vname befor prediction ',vname)
     if st.button('Heads detection!'):
         prediction(vname)
         st.success("Click again to retry or try a different video by uploading")