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• demucs.api or demucs.pretrained aren't working

  9 décembre 2023, par user22801597

  I created my environment and installed several packages for CUDA 11.8.0 (including demucs, pytorch, torchaudio, ffmpeg...). I want to separate a track with demucs with a python code in spyder (i don't want to do it on the anaconda prompt) however I've tried several codes and they seem not be working. I get errors like :

  


  

  • AttributeError : module 'demucs' has no attribute 'Separator' (1)

  


  • ImportError : cannot import name 'load_pretrained' from 'demucs.pretrained' (2) (C :\Users\User\anaconda3\envs\Pytorch\Lib\site-packages\demucs\pretrained.py)

  


  • ModuleNotFoundError : No module named 'demucs.api' (3)

  


  • ModuleNotFoundError : No module named 'demucs.model'(4)

  


  


  So through the errors I assume my demucs package isn't working correctly but I don't know why. I've done the following (I'Ve found this either in google or in chatgpt) :

  


  

  • Checked Library Versions

  


  • Upgraded demucs and other packages
-deinstalled and reinstalled it
Can someone please help me to solve this ? What am I doing worng or why is demucs not working correctly ?

  


  


  This are the different codes I tested according to their errors above :

  


  (1)

  


     import demucs
   separator = demucs.Separator()
   model = demucs.load_pretrained('demucs')
   audio_sources = separator.separate('Zweite_Aufnahme_mit_Piano.wav')
   for source_name, source_audio in audio_sources.items():
       source_audio.to_file(source_name + '.wav')



  


  (2)

  


     import torchaudio
   from demucs.pretrained import load_pretrained
   import soundfile as sf
   import os

   input_audio_file = 'Zweite_Aufnahme_mit_Piano.wav'
   output_directory = 'Separated_audios'

   model = load_pretrained('demucs_quantized')

   audio, _ = torchaudio.load(input_audio_file)

   sources = model(audio)

   os.makedirs(output_directory, exist_ok=True)

   for i, source in enumerate(sources):
       source_path = os.path.join(output_directory, f'source_{i}.wav')
       sf.write(source_path, source[0].numpy(), 44100)

   print("Source separation complete. Separated sources saved in the output directory.")



  


  (3)

  


     from pydub import AudioSegment
   import IPython
   import numpy as np
   import demucs.api
   import pathlib
   import torch

   audiosegment = AudioSegment.from_mp3("Zweite_Aufnahme_mit_Piano.wav")
   arr = audiosegment.get_array_of_samples()
   sr = audiosegment.frame_rate
   ch = audiosegment.channels
   aac = np.array(arr, dtype=np.float32).reshape((-1, ch))
   aac = aac[30*sr:40*sr,:]
   IPython.display.Audio(aac[:, 0], rate=sr)

   separator = demucs.api.Separator()
   model = separator.load_model()
   input = torch.from_numpy(aac.reshape((ch, -1)))
   separator.add_track("born", input)
   separated = separator.separate_loaded_audio()
   for (file, stems) in separated:
       for stem, waveform in stems.items():
         print(stem)
         print(waveform.shape)
         aac_again = waveform.numpy().reshape((-1, ch))
         IPython.display.display(IPython.display.Audio(aac_again[:,0], rate=sr))



  


  (4)

  


     import torchaudio
   from demucs.model import load_pretrained

   audio, sample_rate = torchaudio.load('Zweite_Aufnahme_mit_Piano.wav')
   model = load_pretrained('demucs')
   separated_sources = model(audio)
   torchaudio.save('vocals.wav', separated_sources['vocals'], sample_rate)
   torchaudio.save('accompaniment.wav', separated_sources['accompaniment'], sample_rate)
   torchaudio.save('drums.wav', separated_sources['drums'], sample_rate)
   torchaudio.save('bass.wav', separated_sources['bass'], sample_rate)


  


• How to insert bullet screen comments into a video by using ffmpeg ?

  7 septembre 2019, par Saeron Meng

  I would like to add some real-time comments in my video but I do not know how to use ffmpeg to realize this. The comments are like screen bullets through the screen, scrolling from right to left.

  My thought is to count the length of the comments and define speeds for them to move. Don’t worry about the source of the comments, I have already gotten them saved as an xml file. Also, I can transfer it into srt. For instance :

  <chat timestamp="671.195">
  
      <ems utctime="1562584080" sender="Bill">
  
          <richtext></richtext>
  
      </ems>
  
  </chat>
  
  <chat timestamp="677.798">
  
      <ems utctime="1562584086" sender="Jack">
  
          <richtext></richtext>
  
      </ems>
  
  </chat>

  The final result is like this (I did not find an example displayed in English), these fancy characters can move horizontally :

  

  I have searched some solutions on the Internet, most of which talk about how to write ass/srt files and add motionless subtitles. Like this :

  3
  
  00:00:39,770 --> 00:00:41,880
  
  When I was lying there in the VA hospital ...
  
  
  
  4
  
  00:00:42,550 --> 00:00:44,690
  
  ... with a big hole blown through the middle of my life,
  
  
  
  5
  
  00:00:45,590 --> 00:00:48,120
  
  ... I started having these dreams of flying.

  ffmpeg -i infile.mp4 -i infile.srt -c copy -c:s mov_text outfile.mp4

  But I need another kind of "subtitles" which can move.

  So my question is, how to modify the ffmpeg command and the template of srt file so as to arrange the subtitles from the top to the bottom and let them move from right to left ?

• Evolution #4754 : Mettre à jeu le jeu des icônes de extensions

  30 avril 2021, par b b

  J’oubliais le pack utilisé par deepin OS bien complet aussi :

  https://github.com/USBA/Deepin-icon-theme/blob/master/64x64/mimetypes/application-msword.svg
  https://github.com/USBA/Deepin-icon-theme/blob/master/64x64/mimetypes/application-pdf.svg

  Puis PopOS :

  https://github.com/pop-os/icon-theme/blob/master/Pop/64x64/mimetypes/x-office-document.png
  https://github.com/pop-os/icon-theme/blob/master/Pop/64x64/mimetypes/application-pdf.png

  Et un dernier un peu "pastel" :

  https://github.com/zayronxio/Zafiro-icons/blob/master/mimetypes/48/application-vnd.oasis.opendocument.text.svg
  https://github.com/zayronxio/Zafiro-icons/blob/master/mimetypes/48/application-pdf.svg