maybe fix

vr180_matting/sam2_wrapper.py

@@ -57,8 +57,23 @@ class SAM2VideoMatting:
                         if sam2_repo_path.exists():
                             checkpoint_path = str(sam2_repo_path)
             
+            # Handle config path - if it contains a dot, look for the actual file
+            config_path = model_cfg
+            if not model_cfg.endswith('.yaml'):
+                # Try to find the config file in SAM2 repo structure
+                sam2_config_paths = [
+                    Path("segment-anything-2/sam2/configs/sam2.1") / f"{model_cfg}.yaml",
+                    Path("segment-anything-2/sam2/configs/sam2") / f"{model_cfg}.yaml",
+                    Path("segment-anything-2/sam2") / f"{model_cfg}.yaml"
+                ]
+                
+                for config_file_path in sam2_config_paths:
+                    if config_file_path.exists():
+                        config_path = str(config_file_path)
+                        break
+            
             self.predictor = build_sam2_video_predictor(
-                model_cfg, 
+                config_path, 
                 checkpoint_path,
                 device=self.device
             )