PIAPipelineOutput  
Output class for PIAPipeline.  
Args:
frames (`torch.Tensor`, `np.ndarray`, or List[List[PIL.Image.Image]]):
Nested list of length `batch_size` with denoised PIL image sequences of length `num_frames`, NumPy array of
shape `(batch_size, num_frames, channels, height, width, Torch tensor of shape `(batch_size, num_frames,
channels, height, width)`.