Update app.py

app.py

@@ -101,7 +101,7 @@ def convert_video(video_file, quality, aspect_ratio, video_url):
     def convert_video(video_file, quality, aspect_ratio, video_url):
     # Ensure either a file or a URL is provided
         if not video_file and not video_url:
-        raise ValueError("Please provide either a video file or a video URL.")
+            raise ValueError("Please provide either a video file or a video URL.")
         
     input_path = get_input_path(video_file, video_url)