Update app.py

app.py

@@ -572,8 +572,8 @@ def execute_editing_plan(request_id: str, plan: dict, output_filename: str, is_p
                     "fps": target_fps,          # Ensure consistent FPS
                     "logger": "bar",             # Quieter logs for temp writes
                     # Use preview settings for potentially faster *individual* writes
-                    "preset": 'ultrafast' if is_preview else 'medium',
-                    "bitrate": '1000k' if is_preview else '5000k' # Adjust bitrate as needed
+                    "preset": 'ultrafast' if is_preview else 'fast',
+                    "bitrate": '1000k' if is_preview else '4000k' # Adjust bitrate as needed
                 }
 
                 update_progress(request_id, "WRITING_TEMP", f"Writing temp clip {i+1}/{num_clips} (Order: {order})...")