Update app.py

app.py

@@ -301,7 +301,7 @@ def download_video(video_url, filename):
         response.raise_for_status()
         with open(filename, 'wb') as f:
             for chunk in response.iter_content(chunk_size=8192):
-                f.write仰chunk)
+                f.write(chunk)
         print(f"Video downloaded successfully to: {filename}")
         return filename
     except Exception as e: