option to limit thread usage during optimize_images

data/example-config.py

@@ -22,11 +22,15 @@
         "img_host_6": "ptscreens",
         "img_host_7": "oeimg",
 
-
+        # Number of screenshots to capture
         "screens": "6",
+
         # Enable lossless PNG Compression (True/False)
         "optimize_images": True,
 
+        # Use only half available CPU cores to avoid memory allocation errors
+        # Only when usig lossless compression
+        "shared_seedbox": False,
 
         # The name of your default torrent client, set in the torrent client sections below
         "default_torrent_client": "Client1",

src/prep.py

@@ -1491,6 +1491,13 @@ def valid_ss_time(self, ss_times, num_screens, length):
 
     def optimize_images(self, image):
         if self.config['DEFAULT'].get('optimize_images', True) is True:
+            if self.config['DEFAULT'].get('shared_seedbox', True) is True:
+                # Get number of CPU cores
+                num_cores = multiprocessing.cpu_count()
+                # Limit the number of threads based on half available cores
+                max_threads = num_cores // 2
+                # Set cores for oxipng usage
+                os.environ['RAYON_NUM_THREADS'] = str(max_threads)
             if os.path.exists(image):
                 try:
                     pyver = platform.python_version_tuple()