RuntimeError: No MovieWriters available in Matplotlib animation

Not sure why, but in my case here is the one that worked (in my case was on windows).

Initialize a writer:

import matplotlib.pyplot as plt
import matplotlib.animation as animation
Writer = animation.FFMpegWriter(fps=30, codec='libx264') # Or 
Writer = animation.FFMpegWriter(fps=20, metadata=dict(artist='Me'), bitrate=1800) ==> This is WORKED FINE ^_^

Writer = animation.writers['ffmpeg'] ==> GIVES ERROR ""RuntimeError: Requested MovieWriter (ffmpeg) not available""

Try to specify path to ffpmeg program manually like

import matplotlib.pyplot as plt
plt.rcParams['animation.ffmpeg_path'] = '/usr/local/bin/ffmpeg'

You have to put these code lines at the beginning of a script and then use animation Writer.