Update app.py

app.py

@@ -464,7 +464,7 @@ EXAMPLES = [
 demo = gr.Blocks(title="VideoAuto-R1 Demo")
 
 with demo:
-    gr.Markdown("# VideoAuto-R1 (Qwen3-VL-8B) Demo")
+    gr.Markdown("# [VideoAuto-R1: Video Auto Reasoning via Thinking Once, Answering Twice](https://github.com/IVUL-KAUST/VideoAuto-R1/)")
 
     # Display system prompt
     with gr.Accordion("System Prompt", open=False):
@@ -586,11 +586,54 @@ with demo:
         outputs=[chatbot],
     )
 
-    gr.Examples(
-        examples=EXAMPLES,
-        inputs=[media_input, textbox],
+    examples_ds = gr.Dataset(
+        components=[media_input, textbox],
+        samples=EXAMPLES,
         label="Examples",
-        cache_examples=False,
+        type="index",   # important: pass selected row index to fn
+    )
+
+    def load_example(idx: int | None):
+        # idx can be None when deselecting
+        if idx is None:
+            # just clear everything
+            return clear_history()
+
+        media, text = EXAMPLES[idx][0], EXAMPLES[idx][1]
+
+        # 1) clear all states + re-enable inputs
+        ms, cs, last, file_u, img_u, vid_u, tb_u, send_u = clear_history()
+
+        # 2) set selected example values
+        file_u = gr.update(value=media)
+        tb_u = gr.update(value=text, interactive=True)
+        send_u = gr.update(interactive=True)
+
+        # 3) update preview explicitly (don't rely on File.change always firing)
+        img_u, vid_u = update_preview(media)
+
+        # 4) optionally set last_media_state to current media
+        last = media
+
+        return ms, cs, last, file_u, img_u, vid_u, tb_u, send_u
+
+    examples_ds.select(
+        fn=load_example,
+        inputs=[examples_ds],
+        outputs=[
+            messages_state,
+            chatbot_state,
+            last_media_state,
+            media_input,
+            image_preview,
+            video_preview,
+            textbox,
+            send_btn,
+        ],
+    ).then(
+        fn=lambda cs: cs,
+        inputs=[chatbot_state],
+        outputs=[chatbot],
     )