code: def _get_invalid_label(timestamp: float) -> Dict:
      return {
          "x0": -1,
          "x1": -1,
          "y0": -1,
          "y1": -1,
          "speaking_label": -1,
          "looking_label": -1,
          "is_visible": False,
          "timestamp": timestamp,
      }
  
imports: from typing import Dict
  import pytest
  import torch
  from data.datasets.utils import video
label_desc: Use image node_id 1 for calling a global function with example usage: _get_invalid_label(timestamp) and returns: dict