class_docstr: Record MP4 videos using pybullet's logging API.
code: def reset(self):
      obs = self.env.reset()
      self._episode_idx += 1
      import pybullet
  
      pybullet.startStateLogging(
          pybullet.STATE_LOGGING_VIDEO_MP4,
          os.path.join(
              self._dirname, "{}.mp4".format(self._episode_idx)
          ),
      )
      return obs
  
imports: import argparse
  import functools
  import os
  import chainer
  from chainer import functions
  from chainer import links
  from chainer import optimizers
  import gym
  import gym.spaces
  import numpy
  import chainerrl
  from chainerrl.action_value import DiscreteActionValue
  from chainerrl import experiments
  from chainerrl import explorers
  from chainerrl import misc
  from chainerrl import replay_buffer
label_desc: Use image node_id 2 for calling the RecordMovie obj's underlying member method code with example usage: obj.reset() and returns: obs