code: def test_decode(decoder: str, seek: float):
      s = StreamReader(src)
      s.seek(seek)
      s.add_video_stream(1, decoder=decoder)
      s.fill_buffer()
      (video,) = s.pop_chunks()
      return video[0]
  
imports: import torch
  import torchaudio
  import os
  import time
  import matplotlib.pyplot
  from torchaudio.io import StreamReader
  from torchaudio.utils import ffmpeg_utils
label_desc: Use image node_id 1 for calling a global function with example usage: test_decode(decoder, seek) and returns: video