Make example videos smaller in UI

streamlit_app.py

@@ -393,10 +393,13 @@ else:
     for i, example_file in enumerate(example_files):
         example_full_path = os.path.join(example_video_dir, example_file)
         with cols[i]:
-            st.markdown(f"**{example_file}**") # Display filename
-            st.video(example_full_path) # Display the video
-            if st.button(f"Use Example: {example_file}", key=f"ex_{i}"): # Use unique key for buttons
-                clicked_example = example_full_path
+            # Use nested columns to control width (e.g., 2/3 width for video column)
+            vid_col, _ = st.columns([2, 1]) 
+            with vid_col:
+                st.markdown(f"**{example_file}**") # Display filename
+                st.video(example_full_path) # Display the video
+                if st.button(f"Use Example: {example_file}", key=f"ex_{i}"): # Use unique key for buttons
+                    clicked_example = example_full_path
 # --- End Example Videos Section ---
 
 process_button_main = st.button("Detect Mites from Uploaded Video")