Update app.py

app.py

@@ -30,7 +30,9 @@ def upload():
         return 'No selected file', 400
 
     # Ensure upload folder exists
-    os.makedirs(app.config['UPLOAD_FOLDER'], exist_ok=True)    
+    os.makedirs(app.config['UPLOAD_FOLDER'], exist_ok=True) 
+
+    os.makedirs(app.config['RESULT_FOLDER'], exist_ok=True)
 
     filename = f"{uuid.uuid4()}.mp4"
     filepath = os.path.join(app.config['UPLOAD_FOLDER'], filename)