class_docstr: Helper class for writing videos in batch.
class_docstr_tok: ["Helper","class","for","writing","videos","in","batch","."]
code: def finish(self):
      outs = [w.finish() for w in self.writers]
      return outs
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  from tensor2tensor.layers import common_layers
  from tensor2tensor.utils import contrib
  import tensorflow.compat.v1
  from tensorflow.python.ops import summary_op_util
label_desc: Use image node_id 3 for calling the BatchWholeVideoWriter obj's underlying member method code with example usage: obj.finish() and returns: outs