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AttributeError: 'NoneType' object has no attribute 'stdout'

See original GitHub issue

Notice

If you have arrived here from google, you will probably find that updating your moviepy version to v1.0.3 or higher will fix the issue (pip install moviepy --upgrade). See #1185.

Expected Behavior

Expected to get an edited version of the inputted video.

Actual Behavior

Produces this error:

Moviepy - Building video test.webm.
MoviePy - Writing audio in testTEMP_MPY_wvf_snd.ogg
chunk:   0%|          | 0/552 [00:00<?, ?it/s, now=None]Traceback (most recent call last):
  File "/home/tech/Developement/CrabRaveGenerator/Test.py", line 8, in <module>
    ]).write_videofile("test.webm", fps = 30)
  File "</usr/local/lib/python3.5/dist-packages/decorator.py:decorator-gen-51>", line 2, in write_videofile
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/decorators.py", line 54, in requires_duration
    return f(clip, *a, **k)
  File "</usr/local/lib/python3.5/dist-packages/decorator.py:decorator-gen-50>", line 2, in write_videofile
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/decorators.py", line 137, in use_clip_fps_by_default
    return f(clip, *new_a, **new_kw)
  File "</usr/local/lib/python3.5/dist-packages/decorator.py:decorator-gen-49>", line 2, in write_videofile
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/decorators.py", line 22, in convert_masks_to_RGB
    return f(clip, *a, **k)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/video/VideoClip.py", line 317, in write_videofile
    logger=logger)
  File "</usr/local/lib/python3.5/dist-packages/decorator.py:decorator-gen-73>", line 2, in write_audiofile
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/decorators.py", line 54, in requires_duration
    return f(clip, *a, **k)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/audio/AudioClip.py", line 209, in write_audiofile
    logger=logger)
  File "</usr/local/lib/python3.5/dist-packages/decorator.py:decorator-gen-70>", line 2, in ffmpeg_audiowrite
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/decorators.py", line 54, in requires_duration
    return f(clip, *a, **k)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/audio/io/ffmpeg_audiowriter.py", line 169, in ffmpeg_audiowrite
    logger=logger):
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/audio/AudioClip.py", line 85, in iter_chunks
    fps=fps, buffersize=chunksize)
  File "</usr/local/lib/python3.5/dist-packages/decorator.py:decorator-gen-72>", line 2, in to_soundarray
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/decorators.py", line 54, in requires_duration
    return f(clip, *a, **k)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/audio/AudioClip.py", line 126, in to_soundarray
    snd_array = self.get_frame(tt)
  File "</usr/local/lib/python3.5/dist-packages/decorator.py:decorator-gen-10>", line 2, in get_frame
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/decorators.py", line 89, in wrapper
    return f(*new_a, **new_kw)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/Clip.py", line 95, in get_frame
    return self.make_frame(t)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/audio/AudioClip.py", line 296, in make_frame
    for c, part in zip(self.clips, played_parts)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/audio/AudioClip.py", line 297, in <listcomp>
    if (part is not False)]
  File "</usr/local/lib/python3.5/dist-packages/decorator.py:decorator-gen-10>", line 2, in get_frame
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/decorators.py", line 89, in wrapper
    return f(*new_a, **new_kw)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/Clip.py", line 95, in get_frame
    return self.make_frame(t)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/Clip.py", line 138, in <lambda>
    newclip = self.set_make_frame(lambda t: fun(self.get_frame, t))
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/Clip.py", line 190, in <lambda>
    return self.fl(lambda gf, t: gf(t_func(t)), apply_to,
  File "</usr/local/lib/python3.5/dist-packages/decorator.py:decorator-gen-10>", line 2, in get_frame
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/decorators.py", line 89, in wrapper
    return f(*new_a, **new_kw)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/Clip.py", line 95, in get_frame
    return self.make_frame(t)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/audio/io/AudioFileClip.py", line 78, in <lambda>
    self.make_frame = lambda t: self.reader.get_frame(t)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/audio/io/readers.py", line 180, in get_frame
    self.buffer_around(fr_min)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/audio/io/readers.py", line 238, in buffer_around
    array = self.read_chunk(chunksize)
  File "/usr/local/lib/python3.5/dist-packages/moviepy-1.0.0-py3.5.egg/moviepy/audio/io/readers.py", line 112, in read_chunk
    s = self.proc.stdout.read(L)
AttributeError: 'NoneType' object has no attribute 'stdout'

Steps to Reproduce the Problem

Run the following code:

from moviepy.editor import CompositeVideoClip, VideoFileClip, TextClip

CompositeVideoClip([

    VideoFileClip("template.webm").subclip(5, 30), 
    TextClip("Test Text", fontsize = 70, color = 'white').set_position('center').set_duration(10)
    
]).write_videofile("test.webm", fps = 30)