code: def _get_ffmpeg_versions():
      ffmpeg_vers = _FFMPEG_VERS
      # User override
      if (
          ffmpeg_ver := os.environ.get("TORIO_USE_FFMPEG_VERSION")
      ) is not None:
          if ffmpeg_ver not in ffmpeg_vers:
              raise ValueError(
                  f"The FFmpeg version '{ffmpeg_ver}' (read from TORIO_USE_FFMPEG_VERSION) "
                  f"is not one of supported values. Possible values are {ffmpeg_vers}"
              )
          ffmpeg_vers = [ffmpeg_ver]
      return ffmpeg_vers
  
imports: import importlib
  import logging
  import os
  import types
  from pathlib import Path
  import torch
label_desc: Use image node_id 5 for calling a global function with example usage: _get_ffmpeg_versions() and returns: ffmpeg_vers