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• Getting "TypeError : must be real number, not NoneType" whenever trying to run write_videofile to a clip in moviepy

  9 novembre 2024, par Sato

  Example code :

  


  from moviepy.editor import *
clip = VideoFileClip('video.mp4')
clip.write_videofile('video2.mp4', fps=30)


  


  After showing the following messages, showing that the video is being built and written,

  


  Moviepy - Building video video2.mp4.
Moviepy - Writing video video2.mp4


  


  The following error message occurs :

  


  Traceback (most recent call last):&#xA;  File "<stdin>", line 1, in <module>&#xA;  File "C:\Users\User\Anaconda3\lib\site-packages\decorator.py", line 232, in fun&#xA;    return caller(func, *(extras &#x2B; args), **kw)&#xA;  File "C:\Users\User\Anaconda3\lib\site-packages\moviepy\decorators.py", line 54, in requires_duration&#xA;    return f(clip, *a, **k)&#xA;  File "C:\Users\User\Anaconda3\lib\site-packages\decorator.py", line 232, in fun&#xA;    return caller(func, *(extras &#x2B; args), **kw)&#xA;  File "C:\Users\User\Anaconda3\lib\site-packages\moviepy\decorators.py", line 135, in use_clip_fps_by_default&#xA;    return f(clip, *new_a, **new_kw)&#xA;  File "C:\Users\User\Anaconda3\lib\site-packages\decorator.py", line 232, in fun&#xA;    return caller(func, *(extras &#x2B; args), **kw)&#xA;  File "C:\Users\User\Anaconda3\lib\site-packages\moviepy\decorators.py", line 22, in convert_masks_to_RGB&#xA;    return f(clip, *a, **k)&#xA;  File "C:\Users\User\Anaconda3\lib\site-packages\moviepy\video\VideoClip.py", line 300, in write_videofile&#xA;    ffmpeg_write_video(self, filename, fps, codec,&#xA;  File "C:\Users\User\Anaconda3\lib\site-packages\moviepy\video\io\ffmpeg_writer.py", line 213, in ffmpeg_write_video&#xA;    with FFMPEG_VideoWriter(filename, clip.size, fps, codec = codec,&#xA;  File "C:\Users\User\Anaconda3\lib\site-packages\moviepy\video\io\ffmpeg_writer.py", line 88, in __init__&#xA;    &#x27;-r&#x27;, &#x27;%.02f&#x27; % fps,&#xA;TypeError: must be real number, not NoneType&#xA;</module></stdin>

  


  This occurs whenever I try to perform write_videofile to any kinds of clip in moviepy. It is strange since the exact same code worked for me yesterday, but suddenly not anymore today. Are there any suggestions what the cause is and how to resolve this ?

  


• Why does ffmpeg need DNS resolver as its dependencies ?

  20 décembre 2019, par Kshitij

  I was installing FFmpeg and libav today using brew install ffmpeg libav when I noticed unbound in the dependencies list.

  It’s very strange because unbound is DNS resolver and why ffmpeg would need it.

  ❯ brew install ffmpeg libav
  
  ==> Installing dependencies for ffmpeg: aom, frei0r, gmp, libtasn1, nettle, p11-kit, unbound, gnutls, lame, libass, libbluray, libsoxr, libvidstab, libvpx, opencore-amr, opus, libsndfile, libsamplerate, rubberband, sdl2, speex, giflib, leptonica, tesseract, theora, x264, x265 and xvid

  I even checked the info list for ffmpeg but unbound was not present there

  ❯ brew info ffmpeg
  
  ffmpeg: stable 4.2.1 (bottled), HEAD
  
  Play, record, convert, and stream audio and video
  
  https://ffmpeg.org/
  
  /usr/local/Cellar/ffmpeg/4.2.1_2 (287 files, 56.6MB)*
  
  - Poured from bottle on 2019-12-19 at 10:45:56
  
  From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/ffmpeg.rb
  
  ==> Dependencies
  
  Build: nasm ✘, pkg-config ✔, texi2html ✘
  
  Required: aom ✔, fontconfig ✔, freetype ✔, frei0r ✔, gnutls ✔, lame ✔, libass ✔, libbluray ✔, libsoxr ✔, libvidstab ✔, libvorbis ✔, libvpx ✔, opencore-amr ✔, openjpeg ✔, opus ✔, rtmpdump ✔, rubberband ✔, sdl2 ✔, snappy ✔, speex ✔, tesseract ✔, theora ✔, x264 ✔, x265 ✔, xvid ✔, xz ✔
  
  ==> Options
  
  --HEAD
  
      Install HEAD version
  
  ==> Analytics
  
  install: 66,434 (30 days), 280,128 (90 days), 1,079,492 (365 days)
  
  install-on-request: 48,053 (30 days), 203,583 (90 days), 759,254 (365 days)
  
  build-error: 0 (30 days)

  Links for reference

  • https://formulae.brew.sh/formula/ffmpeg
  • https://formulae.brew.sh/formula/unbound

• Pydub installation and ffmpeg

  6 août 2021, par Lone Lunatic

  I was trying to get raw sound data out of a .mp3 file. Therefor I used the pydub module as stated here. I created a venv for this project and installed all necessary modules. But for some reason, pydub decided to give me an FileNotFoundError :

  



  (venv) Python-IT:LightsDev pythonit$ which python
/Users/pythonit/Documents/Programmieren/Python/LightsDev/venv/bin/python
(venv) Python-IT:LightsDev pythonit$ which pip3
/Users/pythonit/Documents/Programmieren/Python/LightsDev/venv/bin/pip3
(venv) Python-IT:LightsDev pythonit$ pip3 list 
------------- -------
ffmpeg        1.4
pip           18.1
pydub         0.23.0
pyee          5.0.0
python-ffmpeg 1.0.5
setuptools    39.0.1


  



  My exact code looks like that :

  



  from pydub import AudioSegment
sound = AudioSegment.from_mp3('test.mp3')
raw_data = sound._data
print(raw_data)


  



  and I get this error :

  



  FileNotFoundError: [Errno 2] No such file or directory: 'ffprobe': 'ffprobe'


  



  alongside this runtime warning :

  



  RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work
warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)


  



  I don't know if it is me, but some similar questions stating I should install ffmpeg or python-ffmpeg won't work. I can even import the ffmpeg module but nothing happens. I can work with ffmpeg and load files but using it with pydub won't work.

  



  EDIT : Today I changed to my windows machine and looked at the error in-depth. However I didn't manage to get it working, even with the solution provided in the comments (thank you though). I installed the ffmpeg binary as stated and i was able to get ffmpeg running in the shell, however not with pydub... I have no clue what is going on. I guess my mistake is very obvious and I am just not able to get it. Even not subprocess was able to solve this problem despite the fact, that I am able to use ffmpeg in shell. I even was able to convert the file using ffmpeg in shell...

  



   ffmpeg -i test.mp3 test.wav 
 > Output #0, wav, to 'test.wav':


  



  I think I am close to solve the problem myself anyways, but thank you anyways.