class_docstr: Test transforms for pretrained models in pytorchvideo
code: def test_transform_base(self):
      out1 = transform_video(video=self.video)
      self.assertEqual(out1.shape, (3, 8, 256, 256))
      out2 = transform_video(
          video=self.video,
          side_size=224,
          crop_size=224,
          num_frames=None,
          sampling_rate=8,
      )
      self.assertEqual(out2.shape, (3, 30, 224, 224))
  
imports: import numpy
  import unittest
  from towhee.models.utils.video_transforms import transform_video
label_desc: Use image node_id 2 for calling the TestVideoTransforms obj's underlying member method code with example usage: obj.test_transform_base() without return types