class_docstr: Basic Reader Class
class_docstr_tok: ["Basic","Reader","Class"]
code: def __len__(self):
      return len(self.index_dict)
  
imports: import cvtransforms
  import face_alignment
  import numpy
  import skimage.transform
  import skvideo.io
  import torch
  from models import pretrained
label_desc: Use image node_id 6 for calling the VideoReader obj's underlying member method code with example usage: obj.__len__() and returns: len