Update app.py

app.py

@@ -27,8 +27,8 @@ if file_video is not None:
             st.subheader("Output: ")
             output_video = open(output, "rb")
             output_bytes = output_video.read()
-            st.video(output_bytes)
-            st.download_button("Download", output_bytes, mime="video/mp4")
+            st.video(output_bytes, format="video/mp4")
+            st.download_button("Download", output_bytes, file_name="output_video.mp4", mime="video/mp4")