fix temp file

vr180_matting/sam2_wrapper.py

@@ -89,9 +89,10 @@ class SAM2VideoMatting:
             if video_frames is None or len(video_frames) == 0:
                 raise ValueError("Either video_path or video_frames must be provided")
             
-            # Create temporary video file
-            temp_dir = tempfile.mkdtemp()
-            temp_video_path = Path(temp_dir) / "temp_video.mp4"
+            # Create temporary video file in current directory
+            import uuid
+            temp_video_name = f"temp_sam2_{uuid.uuid4().hex[:8]}.mp4"
+            temp_video_path = Path.cwd() / temp_video_name
             
             # Write frames to temporary video
             height, width = video_frames[0].shape[:2]
@@ -266,8 +267,8 @@ class SAM2VideoMatting:
         if self.temp_video_path is not None:
             try:
                 if self.temp_video_path.exists():
-                    # Remove the temporary directory
-                    shutil.rmtree(self.temp_video_path.parent)
+                    # Remove the temporary video file
+                    self.temp_video_path.unlink()
                 self.temp_video_path = None
             except Exception as e:
                 warnings.warn(f"Failed to cleanup temp video: {e}")