Update convert_dl3dv_train.py

convert_dl3dv_train.py

@@ -215,6 +215,11 @@ def process_single_directory(input_dir: Path, output_dir: Path):
 
             image_dir = Path(image_dir) / 'images_4'  # 540x960
 
+            # Check if image directory exists
+            if not image_dir.exists():
+                print(f"Image directory does not exist for {key}, skipping...")
+                continue
+
             num_bytes = get_size(image_dir)
 
             # Read images and metadata.