Update app.py

app.py

@@ -6,6 +6,13 @@ from visualizer import generate_output_video
 import tempfile
 import os
 
+try:
+    from moviepy.editor import ImageSequenceClip
+    print("✅ moviepy is working.")
+except ImportError as e:
+    print("❌ moviepy is broken:", e)
+
+
 def handle_upload(video_file):
     # Step 1: Extract frames and data
     video_path = video_file.name