diff --git a/vr180_matting/sam2_wrapper.py b/vr180_matting/sam2_wrapper.py
index f393c82..d2134ad 100644
--- a/vr180_matting/sam2_wrapper.py
+++ b/vr180_matting/sam2_wrapper.py
@@ -57,22 +57,13 @@ class SAM2VideoMatting:
                         if sam2_repo_path.exists():
                             checkpoint_path = str(sam2_repo_path)
             
-            # Use the config path as-is (should be relative to SAM2 package)
-            # Example: "configs/sam2.1/sam2.1_hiera_l.yaml"
+            # Use SAM2's build_sam2_video_predictor which returns the predictor directly
+            # The predictor IS the model - no .model attribute needed
             self.predictor = build_sam2_video_predictor(
-                model_cfg, 
-                checkpoint_path,
+                config_file=model_cfg, 
+                ckpt_path=checkpoint_path,
                 device=self.device
             )
-            
-            # Enable memory optimizations
-            if self.memory_offload:
-                # SAM2 has different memory optimization options
-                pass  # Memory offloading is handled by SAM2 internally
-            
-            if self.fp16 and self.device == "cuda":
-                # SAM2 handles FP16 internally, no need to manually convert
-                pass
                 
         except Exception as e:
             raise RuntimeError(f"Failed to load SAM2 model: {e}")