Update app.py

app.py

@@ -131,13 +131,20 @@ def predict(process_video):
 
 
 # ---- Gradio Layout -----
+video_in = gr.Video(label="Input Video", mirror_webcam=False, interactive=True)
+video_out = gr.Video(label="Audio Visual Video", mirror_webcam=False, interactive=True)  
+text_output = gr.Textbox()
 demo = gr.Blocks()
 demo.encrypt = False
-text_output = gr.Textbox()
 with demo:
-    with gr.Row():  
-        video_in = gr.Video(label="Input Video", mirror_webcam=False, interactive=True)
-        video_out = gr.Video(label="Audio Visual Video", mirror_webcam=False, interactive=True)  
+    examples = gr.Examples(examples=
+                [ ["demo1.mp4", "roi1.mp4"],
+                  ["demo2.mp4", "roi2.mp4"], 
+                  ["demo3.mp4", "roi3.mp4"],],
+              label="Examples", inputs=[video_in, video_out])
+    with gr.Row():
+        video_in.render()
+        video_out.render()
     with gr.Row():
         detect_landmark_btn = gr.Button("Detect landmark")
         detect_landmark_btn.click(preprocess_video, [video_in], [