code: def test_export_video_array_mult(self):
      self._export_video_array(
          video_codec="libx264rgb",
          height=10,
          width=10,
          num_frames=10,
          fps=5,
          options={"crf": "0"},
          epsilon=1e-6,
      )
      self._export_video_array(
          video_codec="mpeg4", height=10, width=10, num_frames=10, fps=5
      )
      self._export_video_array(
          video_codec="mpeg4",
          height=480,
          width=640,
          num_frames=30,
          fps=30,
      )
  
imports: import os
  import tempfile
  import unittest
  import unittest.mock
  from dataclasses import dataclass
  from pathlib import Path
  from pytorchvideo.data.utils import DataclassFieldCaster, export_video_array, load_dataclass_dict_from_csv, save_dataclass_objs_to_headered_csv
  from pytorchvideo.data.video import VideoPathHandler
  from utils import temp_encoded_video
label_desc: Use image node_id 3 for calling the TestDataUtils obj's underlying member method code with example usage: obj.test_export_video_array_mult() without return types