ERROR: VideoRecorder encoder exited with status 1

[RaihanKhan1970]

New to Open AI and would appreciate help. Everything is going smoothly but can't seem to record or play back the videos. Getting "ERROR: VideoRecorder encoder exited with status 1".

I am using Ubuntu 20

[Khoa-NT]

I'm also having the same issue in my environment with python 3.8.
However, Python 3.7 on Google Colab is running normally.
Still debugging.

[RaihanKhan1970]

I have a workaround. I'm training my models on my Jupyter framework and then uploading my models and recording videos on Colab.

[Khoa-NT]

I fixed it. Follow this post.

• Download gym from source (the master branch) and install with python setup.py install
• Or use gym==0.17.3

I didn't notice Colab using gym==0.17.3

But it only works on python 3.7 with PyTorch 1.7.1
I don't know why it has this error in python 3.8 with PyTorch 1.8.1.

BrokenPipeError: [Errno 32] Broken pipe

---------------------------------------------------------------------------

BrokenPipeError Traceback (most recent call last)
in
10 action = env.action_space.sample()
11
---> 12 observation, reward, done, info = env.step(action)
13
14 if done:

/opt/conda/lib/python3.8/site-packages/gym-0.18.0-py3.8.egg/gym/wrappers/monitor.py in step(self, action)
30 self._before_step(action)
31 observation, reward, done, info = self.env.step(action)
---> 32 done = self._after_step(observation, reward, done, info)
33
34 return observation, reward, done, info

/opt/conda/lib/python3.8/site-packages/gym-0.18.0-py3.8.egg/gym/wrappers/monitor.py in _after_step(self, observation, reward, done, info)
169 self.stats_recorder.after_step(observation, reward, done, info)
170 # Record video
--> 171 self.video_recorder.capture_frame()
172
173 return done

/opt/conda/lib/python3.8/site-packages/gym-0.18.0-py3.8.egg/gym/wrappers/monitoring/video_recorder.py in capture_frame(self)
114 self._encode_ansi_frame(frame)
115 else:
--> 116 self._encode_image_frame(frame)
117
118 def close(self):

/opt/conda/lib/python3.8/site-packages/gym-0.18.0-py3.8.egg/gym/wrappers/monitoring/video_recorder.py in _encode_image_frame(self, frame)
164
165 try:
--> 166 self.encoder.capture_frame(frame)
167 except error.InvalidFrame as e:
168 logger.warn('Tried to pass invalid video frame, marking as broken: %s', e)

/opt/conda/lib/python3.8/site-packages/gym-0.18.0-py3.8.egg/gym/wrappers/monitoring/video_recorder.py in capture_frame(self, frame)
301 raise error.InvalidFrame("Your frame has data type {}, but we require uint8 (i.e. RGB values from 0-255).".format(frame.dtype))
302
--> 303 self.proc.stdin.write(frame.tobytes())
304
305 def close(self):

BrokenPipeError: [Errno 32] Broken pipe

[RaihanKhan1970]

Thank you. Khoa!