AttributeError: 'NoneType' object has no attribute 'get_frame' when calling write_videofile

[Ervin66]

I encountered an AttributeError when attempting to write a video file using write_videofile in MoviePy. The error message indicates that a NoneType object has no attribute get_frame.

Full traceback:

AttributeError                            Traceback (most recent call last)
Cell In[8], line 1
----> 1 combined_vid.write_videofile("test.mp4")

File <decorator-gen-70>:2, in write_videofile(self, filename, fps, codec, bitrate, audio, audio_fps, preset, audio_nbytes, audio_codec, audio_bitrate, audio_bufsize, temp_audiofile, temp_audiofile_path, rewrite_audio, remove_temp, write_logfile, threads, ffmpeg_params, logger, pix_fmt)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:56, in requires_duration(f, clip, *a, **k)
     54     raise ValueError("Attribute 'duration' not set")
     55 else:
---> 56     return f(clip, *a, **k)

File <decorator-gen-69>:2, in write_videofile(self, filename, fps, codec, bitrate, audio, audio_fps, preset, audio_nbytes, audio_codec, audio_bitrate, audio_bufsize, temp_audiofile, temp_audiofile_path, rewrite_audio, remove_temp, write_logfile, threads, ffmpeg_params, logger, pix_fmt)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:135, in use_clip_fps_by_default(f, clip, *a, **k)
    132 new_a = [fun(arg) if (name == "fps") else arg for (arg, name) in zip(a, names)]
    133 new_kw = {k: fun(v) if k == "fps" else v for (k, v) in k.items()}
--> 135 return f(clip, *new_a, **new_kw)

File <decorator-gen-68>:2, in write_videofile(self, filename, fps, codec, bitrate, audio, audio_fps, preset, audio_nbytes, audio_codec, audio_bitrate, audio_bufsize, temp_audiofile, temp_audiofile_path, rewrite_audio, remove_temp, write_logfile, threads, ffmpeg_params, logger, pix_fmt)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:24, in convert_masks_to_RGB(f, clip, *a, **k)
     22 if clip.ismask:
     23     clip = clip.to_RGB()
---> 24 return f(clip, *a, **k)

File <decorator-gen-67>:2, in write_videofile(self, filename, fps, codec, bitrate, audio, audio_fps, preset, audio_nbytes, audio_codec, audio_bitrate, audio_bufsize, temp_audiofile, temp_audiofile_path, rewrite_audio, remove_temp, write_logfile, threads, ffmpeg_params, logger, pix_fmt)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:89, in preprocess_args.<locals>.wrapper(f, *a, **kw)
     84 new_a = [
     85     fun(arg) if (name in varnames) and (arg is not None) else arg
     86     for (arg, name) in zip(a, names)
     87 ]
     88 new_kw = {k: fun(v) if k in varnames else v for (k, v) in kw.items()}
---> 89 return f(*new_a, **new_kw)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\video\VideoClip.py:332, in VideoClip.write_videofile(self, filename, fps, codec, bitrate, audio, audio_fps, preset, audio_nbytes, audio_codec, audio_bitrate, audio_bufsize, temp_audiofile, temp_audiofile_path, rewrite_audio, remove_temp, write_logfile, threads, ffmpeg_params, logger, pix_fmt)
    330 logger(message="Moviepy - Building video %s." % filename)
    331 if make_audio:
--> 332     self.audio.write_audiofile(
    333         audiofile,
    334         audio_fps,
    335         audio_nbytes,
    336         audio_bufsize,
    337         audio_codec,
    338         bitrate=audio_bitrate,
    339         write_logfile=write_logfile,
    340         logger=logger,
    341     )
    343 ffmpeg_write_video(
    344     self,
    345     filename,
   (...)
    355     pix_fmt=pix_fmt,
    356 )
    358 if remove_temp and make_audio:

File <decorator-gen-102>:2, in write_audiofile(self, filename, fps, nbytes, buffersize, codec, bitrate, ffmpeg_params, write_logfile, logger)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:56, in requires_duration(f, clip, *a, **k)
     54     raise ValueError("Attribute 'duration' not set")
     55 else:
---> 56     return f(clip, *a, **k)

File <decorator-gen-101>:2, in write_audiofile(self, filename, fps, nbytes, buffersize, codec, bitrate, ffmpeg_params, write_logfile, logger)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:89, in preprocess_args.<locals>.wrapper(f, *a, **kw)
     84 new_a = [
     85     fun(arg) if (name in varnames) and (arg is not None) else arg
     86     for (arg, name) in zip(a, names)
     87 ]
     88 new_kw = {k: fun(v) if k in varnames else v for (k, v) in kw.items()}
---> 89 return f(*new_a, **new_kw)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\audio\AudioClip.py:230, in AudioClip.write_audiofile(self, filename, fps, nbytes, buffersize, codec, bitrate, ffmpeg_params, write_logfile, logger)
    223     except KeyError:
    224         raise ValueError(
    225             "MoviePy couldn't find the codec associated "
    226             "with the filename. Provide the 'codec' "
    227             "parameter in write_audiofile."
    228         )
--> 230 return ffmpeg_audiowrite(
    231     self,
    232     filename,
    233     fps,
    234     nbytes,
    235     buffersize,
    236     codec=codec,
    237     bitrate=bitrate,
    238     write_logfile=write_logfile,
    239     ffmpeg_params=ffmpeg_params,
    240     logger=logger,
    241 )

File <decorator-gen-97>:2, in ffmpeg_audiowrite(clip, filename, fps, nbytes, buffersize, codec, bitrate, write_logfile, ffmpeg_params, logger)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:56, in requires_duration(f, clip, *a, **k)
     54     raise ValueError("Attribute 'duration' not set")
     55 else:
---> 56     return f(clip, *a, **k)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\audio\io\ffmpeg_audiowriter.py:204, in ffmpeg_audiowrite(clip, filename, fps, nbytes, buffersize, codec, bitrate, write_logfile, ffmpeg_params, logger)
    192 logger(message="MoviePy - Writing audio in %s" % filename)
    193 writer = FFMPEG_AudioWriter(
    194     filename,
    195     fps,
   (...)
    201     ffmpeg_params=ffmpeg_params,
    202 )
--> 204 for chunk in clip.iter_chunks(
    205     chunksize=buffersize, quantize=True, nbytes=nbytes, fps=fps, logger=logger
    206 ):
    207     writer.write_frames(chunk)
    209 writer.close()

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\audio\AudioClip.py:90, in AudioClip.iter_chunks(self, chunksize, chunk_duration, fps, quantize, nbytes, logger)
     88 assert size <= chunksize
     89 tt = (1.0 / fps) * np.arange(pospos[i], pospos[i + 1])
---> 90 yield self.to_soundarray(
     91     tt, nbytes=nbytes, quantize=quantize, fps=fps, buffersize=chunksize
     92 )

File <decorator-gen-99>:2, in to_soundarray(self, tt, fps, quantize, nbytes, buffersize)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:56, in requires_duration(f, clip, *a, **k)
     54     raise ValueError("Attribute 'duration' not set")
     55 else:
---> 56     return f(clip, *a, **k)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\audio\AudioClip.py:138, in AudioClip.to_soundarray(self, tt, fps, quantize, nbytes, buffersize)
    128 """
    129 elif len(tt)> 1.5*buffersize:
    130     nchunks = int(len(tt)/buffersize+1)
   (...)
    134                       for ttc in tt_chunks])
    135 """
    136 # print tt.max() - tt.min(), tt.min(), tt.max()
--> 138 snd_array = self.get_frame(tt)
    140 if quantize:
    141     snd_array = np.maximum(-0.99, np.minimum(0.99, snd_array))

File <decorator-gen-28>:2, in get_frame(self, t)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:89, in preprocess_args.<locals>.wrapper(f, *a, **kw)
     84 new_a = [
     85     fun(arg) if (name in varnames) and (arg is not None) else arg
     86     for (arg, name) in zip(a, names)
     87 ]
     88 new_kw = {k: fun(v) if k in varnames else v for (k, v) in kw.items()}
---> 89 return f(*new_a, **new_kw)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\Clip.py:98, in Clip.get_frame(self, t)
     95         return frame
     96 else:
     97     # print(t)
---> 98     return self.make_frame(t)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\audio\AudioClip.py:320, in CompositeAudioClip.__init__.<locals>.make_frame(t)
    316 def make_frame(t):
    318     played_parts = [c.is_playing(t) for c in self.clips]
--> 320     sounds = [
    321         c.get_frame(t - c.start) * np.array([part]).T
    322         for c, part in zip(self.clips, played_parts)
    323         if (part is not False)
    324     ]
    326     if isinstance(t, np.ndarray):
    327         zero = np.zeros((len(t), self.nchannels))

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\audio\AudioClip.py:321, in <listcomp>(.0)
    316 def make_frame(t):
    318     played_parts = [c.is_playing(t) for c in self.clips]
    320     sounds = [
--> 321         c.get_frame(t - c.start) * np.array([part]).T
    322         for c, part in zip(self.clips, played_parts)
    323         if (part is not False)
    324     ]
    326     if isinstance(t, np.ndarray):
    327         zero = np.zeros((len(t), self.nchannels))

File <decorator-gen-28>:2, in get_frame(self, t)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:89, in preprocess_args.<locals>.wrapper(f, *a, **kw)
     84 new_a = [
     85     fun(arg) if (name in varnames) and (arg is not None) else arg
     86     for (arg, name) in zip(a, names)
     87 ]
     88 new_kw = {k: fun(v) if k in varnames else v for (k, v) in kw.items()}
---> 89 return f(*new_a, **new_kw)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\Clip.py:98, in Clip.get_frame(self, t)
     95         return frame
     96 else:
     97     # print(t)
---> 98     return self.make_frame(t)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\Clip.py:141, in Clip.fl.<locals>.<lambda>(t)
    138     apply_to = []
    140 # mf = copy(self.make_frame)
--> 141 newclip = self.set_make_frame(lambda t: fun(self.get_frame, t))
    143 if not keep_duration:
    144     newclip.duration = None

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\Clip.py:193, in Clip.fl_time.<locals>.<lambda>(gf, t)
    189 if apply_to is None:
    190     apply_to = []
    192 return self.fl(
--> 193     lambda gf, t: gf(t_func(t)), apply_to, keep_duration=keep_duration
    194 )

File <decorator-gen-28>:2, in get_frame(self, t)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:89, in preprocess_args.<locals>.wrapper(f, *a, **kw)
     84 new_a = [
     85     fun(arg) if (name in varnames) and (arg is not None) else arg
     86     for (arg, name) in zip(a, names)
     87 ]
     88 new_kw = {k: fun(v) if k in varnames else v for (k, v) in kw.items()}
---> 89 return f(*new_a, **new_kw)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\Clip.py:98, in Clip.get_frame(self, t)
     95         return frame
     96 else:
     97     # print(t)
---> 98     return self.make_frame(t)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\Clip.py:141, in Clip.fl.<locals>.<lambda>(t)
    138     apply_to = []
    140 # mf = copy(self.make_frame)
--> 141 newclip = self.set_make_frame(lambda t: fun(self.get_frame, t))
    143 if not keep_duration:
    144     newclip.duration = None

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\Clip.py:193, in Clip.fl_time.<locals>.<lambda>(gf, t)
    189 if apply_to is None:
    190     apply_to = []
    192 return self.fl(
--> 193     lambda gf, t: gf(t_func(t)), apply_to, keep_duration=keep_duration
    194 )

File <decorator-gen-28>:2, in get_frame(self, t)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\decorators.py:89, in preprocess_args.<locals>.wrapper(f, *a, **kw)
     84 new_a = [
     85     fun(arg) if (name in varnames) and (arg is not None) else arg
     86     for (arg, name) in zip(a, names)
     87 ]
     88 new_kw = {k: fun(v) if k in varnames else v for (k, v) in kw.items()}
---> 89 return f(*new_a, **new_kw)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\Clip.py:98, in Clip.get_frame(self, t)
     95         return frame
     96 else:
     97     # print(t)
---> 98     return self.make_frame(t)

File c:\Users\user\miniconda3\envs\yt-dev\Lib\site-packages\moviepy\audio\io\AudioFileClip.py:88, in AudioFileClip.__init__.<locals>.<lambda>(t)
     85 self.buffersize = self.reader.buffersize
     86 self.filename = filename
---> 88 self.make_frame = lambda t: self.reader.get_frame(t)
     89 self.nchannels = self.reader.nchannels

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

Expected Behavior

expected to write a mp4 file

Actual Behavior

attribute error

Steps to Reproduce the Problem

Specifications

• Python Version: 3.11.9
• MoviePy Version: 1.0.3
• Platform Name: windows
• Platform Version: 10

[harroopsra]

Can you post your code so we can try and see where the problem might lie? It's a little hard to give a catchall answer, some more context would be good.