code: def check_container(cont):
      pipe = Pipeline(batch_size=1, num_threads=4, device_id=0)
      path = os.path.join(video_containers_data_root, cont)
      test_videos = [path + "/" + f for f in os.listdir(path)]
      with pipe:
          # mkv container for some reason fails in DALI VFR heuristics
          vid = fn.readers.video(
              device="gpu",
              filenames=test_videos,
              sequence_length=10,
              skip_vfr_check=True,
              stride=1,
              name="Reader",
          )
          pipe.set_outputs(vid)
      pipe.build()
  
      iter_num = pipe.reader_meta("Reader")["epoch_size"]
      for _ in range(iter_num):
          pipe.run()
  
imports: import os
  import math
  from test_utils import get_gpu_num
  from test_utils import get_dali_extra_path
  import nvidia.dali.ops
  import nvidia.dali.types
  from nvidia.dali.pipeline import Pipeline, pipeline_def
  import nvidia.dali.fn
  import numpy
  import tempfile
  from test_utils import check_output_pattern
  from nose_utils import assert_raises, raises
label_desc: Use image node_id 25 for calling a global function with example usage: check_container(cont) without return types