class_docstr: Support for pyAV as backend.
  
  Parameters
  ----------
  request : iio.Request
      A request object that represents the users intent. It provides a
      standard interface to access various the various ImageResources and
      serves them to the plugin as a file object (or file). Check the docs for
      details.
class_docstr_tok: ["Support","for","pyAV","as","backend",".","Parameters","--","--","--","--","--","request",":","iio.Request","A","request","object","that","represents","the","users","intent",".","It","provides","a","standard","interface","to","access","various","the","various","ImageResources","and","serves","them","to","the","plugin","as","a","file","object","(","or","file",")",".","Check","the","docs","for","details","."]
docstr: Container-specific metadata.
  
  A dictionary containing metadata stored at the container level.
docstr_tok: ["Container-specific","metadata",".","A","dictionary","containing","metadata","stored","at","the","container","level","."]
code: def container_metadata(self):
      """Container-specific metadata.
  
      A dictionary containing metadata stored at the container level.
  
      """
      return self._container.metadata
  
imports: from fractions import Fraction
  from math import ceil
  from typing import Any, Dict, List, Optional, Tuple, Union, Generator
  import av
  import av.filter
  import numpy
  from numpy.lib.stride_tricks import as_strided
  from ..core import Request
  from ..core.request import URI_BYTES, InitializationError, IOMode
  from ..core.v3_plugin_api import ImageProperties, PluginV3
label_desc: Use image node_id 12 for calling the PyAVPlugin obj's underlying member method code with example usage: obj.container_metadata() and returns: self