Update app.py

app.py

@@ -266,15 +266,15 @@ def main():
     with col2:
         generate_subtitles = st.checkbox("Generate Subtitles", value=True)
         
-    if generate_subtitles:
-        col3, col4 = st.columns(2)
-        with col3:
-            subtitle_size = st.slider("Subtitle Size", 16, 32, 24)
-        with col4:
-            subtitle_color = st.color_picker("Subtitle Color", "#FFFFFF")
+    # Ensure subtitle size and color are always defined
+    subtitle_size = 24  # Default subtitle size
+    subtitle_color = 'white'  # Default subtitle color
     
-    # Process video
-    if st.button("Start Dubbing"):
+    if generate_subtitles:
+        subtitle_size = st.slider("Subtitle Size", 10, 40, 24)
+        subtitle_color = st.color_picker("Subtitle Color", "#FFFFFF")
+
+    if st.button("Process Video"):
         try:
             output_video_path = process_video(
                 video_file.read(),