UI: Add user instructions to Test Videos page

app.py

@@ -396,6 +396,18 @@ if app_mode =='About App':
         ''')
     
 elif app_mode =='Run on Test Videos':
+    st.markdown('''
+        ## How to use the Test Videos
+        Follow these steps to run a prediction on a test video:
+        1. Open the **sidebar** on the left.
+        2. Select a **Category** from the dropdown.
+        3. Select a specific **Class** (the sign language word you want to test).
+        4. Select a specific **File** from the available test videos.
+        5. Click the **"Start"** button at the bottom of the sidebar to run the prediction model on the video.
+        
+        The app will load the frames, process them, and display the predicted translation!
+        ---
+    ''')
     # placeholder = st.empty()
     category = st.sidebar.selectbox('Choose Category',
                                     np.sort(test_files_df['Category'].unique(), axis=-1, kind='mergesort'))