class_docstr: An abstraction of meter for evaluating video models.
  
  Video-level metric is computed by averaging clip-level predictions and
  compare the result with video-level groundtruth label.
  
  This meter abstraction can wrap conventional classy meters by passing
  averaged clip-level predictions to the meter needed for video level metrics.
code: def value(self):
      return self.meter.value
  
file_path: ClassyVision/classy_vision/meters/video_meter.py
imports: import logging
  import torch
  from classy_vision.meters import ClassyMeter
label_desc: Use image node_id 2 for calling the VideoMeter obj's underlying member method code with example usage: obj.value() and returns: self