`RuntimeError: No ffmpeg exe could be found` occured

[LittleWat]

I also faced #8 issue and solved it by executing the command below

!bash ./requirements.sh

But RuntimeError: No ffmpeg exe could be found occured.

---------------------------------------------------------------------------
RuntimeError                              Traceback (most recent call last)
<ipython-input-2-fb7c3305f190> in <module>()
      4 from PIL import Image
      5 import logging
----> 6 import pypianoroll
      7 import scipy.stats
      8 import pickle

~/anaconda3/envs/python3/lib/python3.6/site-packages/pypianoroll/__init__.py in <module>()
     16 
     17 import pypianoroll.metrics
---> 18 from pypianoroll.multitrack import Multitrack
     19 from pypianoroll.track import Track
     20 from pypianoroll.utilities import (

~/anaconda3/envs/python3/lib/python3.6/site-packages/pypianoroll/multitrack.py in <module>()
     11 from six import string_types
     12 
---> 13 from pypianoroll.track import Track
     14 from pypianoroll.visualization import plot_multitrack
     15 

~/anaconda3/envs/python3/lib/python3.6/site-packages/pypianoroll/track.py in <module>()
      7 from six import string_types
      8 
----> 9 from pypianoroll.visualization import plot_track
     10 
     11 

~/anaconda3/envs/python3/lib/python3.6/site-packages/pypianoroll/visualization.py in <module>()
     15 
     16 try:
---> 17     from moviepy.editor import VideoClip
     18     from moviepy.video.io.bindings import mplfig_to_npimage
     19 

~/anaconda3/envs/python3/lib/python3.6/site-packages/moviepy/editor.py in <module>()
     34 
     35 # Clips
---> 36 from .video.io.VideoFileClip import VideoFileClip
     37 from .video.io.ImageSequenceClip import ImageSequenceClip
     38 from .video.io.downloader import download_webfile

~/anaconda3/envs/python3/lib/python3.6/site-packages/moviepy/video/io/VideoFileClip.py in <module>()
      1 import os
      2 
----> 3 from moviepy.audio.io.AudioFileClip import AudioFileClip
      4 from moviepy.Clip import Clip
      5 from moviepy.video.io.ffmpeg_reader import FFMPEG_VideoReader

~/anaconda3/envs/python3/lib/python3.6/site-packages/moviepy/audio/io/AudioFileClip.py in <module>()
      1 from __future__ import division
      2 
----> 3 from moviepy.audio.AudioClip import AudioClip
      4 from moviepy.audio.io.readers import FFMPEG_AudioReader
      5 

~/anaconda3/envs/python3/lib/python3.6/site-packages/moviepy/audio/AudioClip.py in <module>()
      5 from tqdm import tqdm
      6 
----> 7 from moviepy.audio.io.ffmpeg_audiowriter import ffmpeg_audiowrite
      8 from moviepy.Clip import Clip
      9 from moviepy.decorators import requires_duration

~/anaconda3/envs/python3/lib/python3.6/site-packages/moviepy/audio/io/ffmpeg_audiowriter.py in <module>()
      5 
      6 from moviepy.compat import DEVNULL
----> 7 from moviepy.config import get_setting
      8 from moviepy.decorators import requires_duration
      9 

~/anaconda3/envs/python3/lib/python3.6/site-packages/moviepy/config.py in <module>()
     34 if FFMPEG_BINARY=='ffmpeg-imageio':
     35     from imageio.plugins.ffmpeg import get_exe
---> 36     FFMPEG_BINARY = get_exe()
     37 
     38 elif FFMPEG_BINARY=='auto-detect':

~/anaconda3/envs/python3/lib/python3.6/site-packages/imageio/plugins/ffmpeg.py in get_exe()
     47     import imageio_ffmpeg
     48 
---> 49     return imageio_ffmpeg.get_ffmpeg_exe()
     50 
     51 

~/anaconda3/envs/python3/lib/python3.6/site-packages/imageio_ffmpeg/_utils.py in get_ffmpeg_exe()
     48     # Nothing was found
     49     raise RuntimeError(
---> 50         "No ffmpeg exe could be found. Install ffmpeg on your system, "
     51         "or set the IMAGEIO_FFMPEG_EXE environment variable."
     52     )

RuntimeError: No ffmpeg exe could be found. Install ffmpeg on your system, or set the IMAGEIO_FFMPEG_EXE environment variable.

I think the command such as !conda install ffmpeg -y should be included in requrements.sh