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• Has anyone used the speech driven animation and can you make it work ?

  16 août 2020, par hopw Jan

  I'm talking about this repo. I installed all the dependencies but I can't make it work. Any help is highly appreciated ( :

  


  I'm running python 3.7.5.

  


  This is my code :

  


  import sda
import scipy.io.wavfile as wav
from PIL import Image

va = sda.VideoAnimator(gpu=0, model_path="crema")# Instantiate the animator
fs, audio_clip = wav.read("example/audio.wav")
still_frame = Image.open("example/image.bmp")
vid, aud = va(frame, audio_clip, fs=fs)
va.save_video(vid, aud, "generated.mp4")


  


  Sadly it doesn't seem to work and it gives me this error :

  


  Warning (from warnings module):&#xA;  File "C:\Users\Alex\AppData\Local\Programs\Python\Python37\lib\site-packages\pydub\utils.py", line 170&#xA;    warn("Couldn&#x27;t find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)&#xA;RuntimeWarning: Couldn&#x27;t find ffmpeg or avconv - defaulting to ffmpeg, but may not work&#xA;Traceback (most recent call last):&#xA;  File "C:\Users\Alex\Desktop\test\test.py", line 8, in <module>&#xA;    vid, aud = va(frame, audio_clip, fs=fs)&#xA;NameError: name &#x27;frame&#x27; is not defined&#xA;</module>

  


  Spent about 2 hours and I can't do anything, I'm out of ideas.
If you take the time to help me thank you from the bottom of my heart.

  


• Permission denied when using matplotlib animation

  19 juillet 2020, par Nate Stemen

  Trying to make an animation using example code found here. I have installed both ffmpeg and yasm, but when I run the code, including the line

  



  ani.save('test.mp4', writer = FFwriter, dpi = 40)


  



  I get the following error.

  



  PermissionError: [Errno 13] Permission denied


  



  (where FFwriter = animation.FFMpegWriter(fps = 30) is defined in the beginning of my Jupyter doc). I have tried so much, but can't get anything to work. Even tried changing the permissions of ffmpeg but still can't get the error to go away.

  



  EDIT
Here is my imports and such to include more detail

  



  import numpy as np
import matplotlib
import matplotlib.pyplot as plt
import matplotlib.animation as animation
plt.rcParams['animation.ffmpeg_path'] = '/usr/local/Cellar/ffmpeg/'
FFwriter = animation.FFMpegWriter(fps = 30)


  


• How do I properly save an animation involving circles with matplotlib.animation and ffmpeg ?

  12 juillet 2020, par bghost

  I recently tried out matplotlib.animation, and it's a wonderful tool. I can now make and save basic animations (ie that only involve straight lines) without any issues. However, when I made an animation involving circles, even though the interactive display was perfect, the saved mp4 file wasn't really satisfying. In the mp4 file, the edges of the circles were blurred, and if the circles were made semi-transparent (ie with an alpha value < 1), they all suddenly became completely opaque after a couple of frames. I suspected it was due to the fact that my bitrate wasn't high enough, but I went up to 10000 kb/s (instead of 1800), and exactly the same phenomenon occurred.

  &#xA;

  What can be done to solve these 2 issues (blurred edges + negated transparency) in the generated mp4 file ?

  &#xA;

  Here is a simple animation that describes what I just said :

  &#xA;

  import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation

fig = plt.figure(figsize=(11, 7))
ax = plt.axes(xlim=(-1.2, 1.2), ylim=(-0.7, 0.7))
ax.set_aspect('equal')

dict_circles = {}
dict_circles['ring'] = plt.Circle((-0.5, 0), 0.5, color='b', lw=2, fill=False)
dict_circles['disk'] = plt.Circle((-0.5, 0), 0.5, color='b', alpha=0.2)

def init():
    for circle in dict_circles.values():
        ax.add_patch(circle)
    return(dict_circles.values())

nb_frames = 100
X_center = np.linspace(-0.5, 0.5, nb_frames)

def animate(frame):
    for circle in dict_circles.values():
        circle.center = (X_center[frame], 0)
        ax.add_patch(circle)
    return(dict_circles.values())

ani = animation.FuncAnimation(fig, animate, init_func=init, frames=nb_frames, blit=True, interval=10, repeat=False)
plt.show()

plt.rcParams['animation.ffmpeg_path'] = 'C:\\ffmpeg\\bin\\ffmpeg.exe'
Writer = animation.writers['ffmpeg']
writer_ref = Writer(fps=15, bitrate=1800)

ani.save('Blue circle.mp4', writer=writer_ref)


  &#xA;