Update app.py

app.py

@@ -9,15 +9,21 @@ def extract_frames(video_path):
     
     cap = cv2.VideoCapture(video_path)
     fps = cap.get(cv2.CAP_PROP_FPS)
+    
+    if fps == 0 or fps is None:
+        return "Error: Could not determine FPS of the video."
+    
     extracted_images = []
     frame_count = 0
     
+    frame_interval = max(1, int(fps / 60))  # Avoid division by zero
+    
     while True:
         success, frame = cap.read()
         if not success:
             break
         
-        if frame_count % int(fps / 24) == 0:  # Extract 60 frames per second
+        if frame_count % frame_interval == 0:  # Extract 60 frames per second
             image_path = os.path.join(output_folder, f"frame_{frame_count}.jpg")
             cv2.imwrite(image_path, frame)
             extracted_images.append(image_path)
@@ -26,6 +32,9 @@ def extract_frames(video_path):
     
     cap.release()
     
+    if not extracted_images:
+        return "Error: No frames extracted."
+    
     zip_filename = "extracted_frames.zip"
     with zipfile.ZipFile(zip_filename, 'w') as zipf:
         for img in extracted_images: