adding 1 row for lighting demo

src/streamlit_app.py

@@ -4,6 +4,7 @@ import os
 # Video directories
 VIDEO_FOLDER_1 = "./src/synthda_falling_realreal/"
 VIDEO_FOLDER_2 = "./src/synthda_demo_fall_2/"
+VIDEO_FOLDER_3 = "./src/synthda_demo_fall_3/"  # NEW
 
 # Set page layout
 st.set_page_config(layout="wide")
@@ -110,3 +111,49 @@ with col6:
         st.video(video_input2_2)
     else:
         st.error("Video 2 not found")
+
+# ---------- Row 3: synthda_demo_fall_3 (NEW) ----------
+st.markdown("## Demo Set 3: Real-Real Interpolation [Fall]")
+
+weight3 = st.slider("Interpolation Weight (Set 3)", 0.0, 1.0, 0.5, step=0.1)
+
+if weight3 == 0.0:
+    interp_text3 = "Showing Input Video 1 (no interpolation)"
+elif weight3 == 1.0:
+    interp_text3 = "Showing Input Video 2 (no interpolation)"
+else:
+    w2 = round(1.0 - weight3, 1)
+    interp_text3 = f"Generated motion: {weight3:.1f} from Input Video 1 + {w2:.1f} from Input Video 2"
+
+st.markdown(f"**{interp_text3}**")
+
+filename_interp3 = f"videos_generated_{weight3:.1f}.mp4"
+filename_input1_3 = "videos_generated_0.0.mp4"
+filename_input2_3 = "videos_generated_1.0.mp4"
+
+video_interp3 = os.path.join(VIDEO_FOLDER_3, filename_interp3)
+video_input1_3 = os.path.join(VIDEO_FOLDER_3, filename_input1_3)
+video_input2_3 = os.path.join(VIDEO_FOLDER_3, filename_input2_3)
+
+col7, col8, col9 = st.columns(3)
+
+with col7:
+    st.markdown("**Input Video 1 (Generated)**")
+    if os.path.exists(video_input1_3):
+        st.video(video_input1_3)
+    else:
+        st.error("Video 1 not found")
+
+with col8:
+    st.markdown("**Interpolated Video**")
+    if os.path.exists(video_interp3):
+        st.video(video_interp3)
+    else:
+        st.error("Interpolated video not found")
+
+with col9:
+    st.markdown("**Input Video 2 (Real)**")
+    if os.path.exists(video_input2_3):
+        st.video(video_input2_3)
+    else:
+        st.error("Video 2 not found")