Update app.py

app.py

@@ -17,15 +17,18 @@ if uploaded_file is not None:
     video_bytes = video_file.read()
     st.video(video_bytes)
 
-    with open(output, "rb") as file:
+    tfile2 = tempfile.NamedTemporaryFile(delete=False)
+    tfile2.write(output.read())
+    
+    with open(tfile2.name, "rb") as file:
         btn = st.download_button(
                 label="Download video",
                 data=file,
-                file_name=output,
+                file_name=tfile2.name,
                 mime="video/mp4"
               )
 
-    video_file = open(output, 'rb')
+    video_file = open(tfile2.name, 'rb')
     video_bytes = video_file.read()
     st.video(video_bytes)