code: def video_hflip(vid: torch.Tensor) -> torch.Tensor:
      return vid.flip(dims=(-1,))
  
file_path: mmf/mmf/datasets/processors/functional.py
imports: from typing import List, Tuple, Union
  import torch
label_desc: Use image node_id 3 for calling a global function with example usage: video_hflip(vid) and returns: vid