Update app.py

app.py

@@ -25,6 +25,14 @@ title = "Welcome to DDM DeepSort"
 description = "Upload a video to process it using DDM and DeepSORT."
 
 with gr.Blocks() as demo:
+
+    gr.Interface(
+        fn=app_main,
+        inputs="video",
+        outputs="video",
+        title=title,
+        description=description
+    )
     gr.Markdown("""
     # Welcome to My Neuroscience Project
     The author is a third-year undergraduate student at the School of Intelligent Science and Technology, Nanjing University, Suzhou Campus.
@@ -40,15 +48,12 @@ with gr.Blocks() as demo:
     </div>
     """)
 
-    with gr.Row(align="center"):
-        gr.Video(value="DDMDeepsort1.mp4", label="Demo Video", width=720, height=435)
+    with gr.Row():
+        with gr.Column():
+            gr.HTML("<div style='display: flex; justify-content: center;'>")
+            gr.Video(value="DDMDeepsort1.mp4", label="Demo Video", width=720, height=435)
+            gr.HTML("</div>")
+
 
-    gr.Interface(
-        fn=app_main,
-        inputs="video",
-        outputs="video",
-        title=title,
-        description=description
-    )
 
 demo.launch()