shutil error handling

bin/vcmp

@@ -202,9 +202,21 @@ def process_single_file(
         return False
     else:
         # File successfully converted to av1, move to destination
-        # Use shutil move because of inter-fs issues
         target_path.parent.mkdir(parents=True, exist_ok=True)
+        try:
             shutil.move(str(temp_path), str(target_path))
+        except (PermissionError, OSError):
+            try:
+                logging.warning(f"Failed to move file with metadata, falling back to copy")
+                shutil.copy(str(temp_path), str(target_path))
+                temp_path.unlink()
+            except Exception as e:
+                logging.error(f"Failed to copy file: {e}")
+                if temp_path.exists():
+                    temp_path.unlink()
+                release_file_lock(filepath)
+                return False
+
         logging.info(f"Successfully compressed {filepath}")
         if remove_source:
             logging.info(f"Removing source file {filepath}")