class_docstr: Test video utils.
docstr: Test frame sampling.
docstr_tok: ["Test","frame","sampling","."]
code: def test_sample_frames_uniformly(
      self, n_sampled_frames, output_shape
  ):
      """Test frame sampling."""
      input_shape = (32, 128, 224, 224, 3)
      self.assertSequenceEqual(
          output_shape,
          video_utils.sample_frames_uniformly(
              np.zeros(input_shape), n_sampled_frames
          ).shape,
      )
  
imports: from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  from scenic.common_lib import video_utils
label_desc: Use image node_id 1 for calling the VideoUtilsTest obj's underlying member method code with example usage: obj.test_sample_frames_uniformly(n_sampled_frames, output_shape) without return types