code: def normalize(x: Tensor) -> Tensor:
      return x / 255.0
  
file_path: lightning-flash/src/flash/video/classification/input_transform.py
imports: from dataclasses import dataclass
  from typing import Callable
  import torch
  from torch import Tensor
  from flash.core.data.io.input import DataKeys
  from flash.core.data.io.input_transform import InputTransform
  from flash.core.data.transforms import ApplyToKeys
  from flash.core.utilities.imports import _KORNIA_AVAILABLE, _PYTORCHVIDEO_AVAILABLE, requires
label_desc: Use image node_id 1 for calling a global function with example usage: normalize(x) and returns: unknown