colab-gym-recording

colab_gym_recording.py

import gym
from gym import logger as gymlogger
from gym.wrappers import Monitor
import glob
import io
import base64
from IPython.display import HTML, clear_output

from IPython import display as ipythondisplay

from pyvirtualdisplay import Display
display = Display(visible=0, size=(1400, 900))
display.start()

# Adapted from: https://colab.research.google.com/drive/1flu31ulJlgiRL1dnN2ir8wGh9p7Zij2t

"""
Utility functions to enable video recording of gym environment and displaying it
To enable video, just do "env = wrap_env(env)""
"""

def show_video():
  mp4list = glob.glob('video/*.mp4')
  if len(mp4list) > 0:
    mp4 = mp4list[0]
    video = io.open(mp4, 'r+b').read()
    encoded = base64.b64encode(video)
    ipythondisplay.display(HTML(data='''<video alt="test" 
                controls style="height: 400px;">
                <source src="data:video/mp4;base64,{0}" type="video/mp4" />
             </video>'''.format(encoded.decode('ascii'))))
  else: 
    print("Could not find video")
    

def video_wrap_env(env):
  env = Monitor(env, './video', force=True)
  return env

dependencies.sh

pip install gym pyvirtualdisplay box2d box2d-kengz > /dev/null 2>&1
apt-get install -y xvfb python-opengl ffmpeg > /dev/null 2>&1