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• How to use Mozilla DeepSpeech to generate subtitle from video file ?

  31 mars 2022, par SingularitySG

  I'm currently trying to generate subtitles file .srt using Mozilla DeepSpeech libraries.

  


  Confusion I'm having :

  


  I'm following this guide but I'm completely lost at the part where he uses pyAudioAnalysis to trim out the silence portion of the .wav files.

  


  Another is the portion where he processes the audio file via calling the ds model & ds scorer
I've downloaded both deepspeech-0.9.3-models.scorer and deepspeech-0.9.3-models.pbmm from https://github.com/mozilla/DeepSpeech/releases Do I just reference the model and scorer to the downloaded file path instead ?

  


  def ds_process_audio(audio_file, file_handle): 
    ds = Model(ds_model)
    ds.enableExternalScorer(ds_scorer)


  


  At the moment, I'm able to extract out .wav files from .mp4, .mkv video format.

  


  I've tried pip install pyAudioAnalysis but I'm not sure how to call the functions that are related to it as per his guide in trimming out the silence portion of the .wav file. Below is the code I'm currently working with as of now.

  


  video_name = "Videos\Gintama_EP342.mkv"
audio_name = video_name + ".wav"


def extractAudio(input_file, audio_file_name):
    # Extract audio from input video file and save to audio/ in root dir
    # Args:
    #    input_file : input video file
    #    audio_file_name : save audio WAV file with same filename as video file

    command = ["ffmpeg", "-hide_banner", "-loglevel", "warning", "-i", input_file, "-ac", "1", "-ar", "16000", "-vn", "-f", "wav", audio_file_name]    
    try:
        ret = sp.call(command, shell=True)
        print("Extracted audio to audio/{}".format(audio_file_name.split("/")[-1]))
    except Exception as e:
        print("Error: ", str(e))
        exit(1)


  


  Appreciate any help given. Thank you

  


• How to ensure plt.savefig saves multiple images instead of one ?

  18 mars 2018, par Natalie

  I’m trying to save images after for each iteration to show how my neural network is learning.

  for iterations in range(1,1000):
  
      model.fit(x_train, 
  
                y_train, 
  
                batch_size=20, 
  
                epochs=1, 
  
                verbose=2)
  
  
  
  predictions = model.predict(X)
  
  plt.plot(X,predictions,'o')
  
  plt.plot(r, morse(r,De,Re,alpha))
  
  plt.xlabel(r'$r$') # internuclear separation distance
  
  plt.ylabel(r'$V(r)$') # morse potential energy
  
  plt.savefig('myfig'+str(iterations))
  
  plt.clf()

  Originally, I was able to save every image, however, it now only saves the last iteration image only. I wondered how I might be able to solve this issue ?

  Also, related the first question : using the images I’m saving, I’m trying to merge all the images together into a quick movie to show the training process. I’ve been using ffmpeg (see image below for syntax error), but I keep getting syntax errors. Could anyone guide me through what I might be doing wrong ? ffmpeg syntax error I’m getting

  Thanks in advance for helping me out - completely new to machine learning but using it for a university project, so apologies for my lack of understanding/mistakes !!

• dsputil : Split audio operations off into a separate context

  16 janvier 2014, par Diego Biurrun

  dsputil : Split audio operations off into a separate context
  

  • [DBH] configure
  • [DBH] libavcodec/Makefile
  • [DBH] libavcodec/ac3enc.c
  • [DBH] libavcodec/ac3enc.h
  • [DBH] libavcodec/ac3enc_fixed.c
  • [DBH] libavcodec/ac3enc_float.c
  • [DBH] libavcodec/ac3enc_template.c
  • [DBH] libavcodec/acelp_pitch_delay.c
  • [DBH] libavcodec/acelp_pitch_delay.h
  • [DBH] libavcodec/arm/Makefile
  • [DBH] libavcodec/arm/audiodsp_arm.h
  • [DBH] libavcodec/arm/audiodsp_init_arm.c
  • [DBH] libavcodec/arm/audiodsp_init_neon.c
  • [DBH] libavcodec/arm/audiodsp_neon.S
  • [DBH] libavcodec/arm/dsputil_init_neon.c
  • [DBH] libavcodec/arm/dsputil_neon.S
  • [DBH] libavcodec/audiodsp.c
  • [DBH] libavcodec/audiodsp.h
  • [DBH] libavcodec/cook.c
  • [DBH] libavcodec/dsputil.c
  • [DBH] libavcodec/dsputil.h
  • [DBH] libavcodec/ppc/Makefile
  • [DBH] libavcodec/ppc/audiodsp.c
  • [DBH] libavcodec/ppc/dsputil_altivec.h
  • [DBH] libavcodec/ppc/dsputil_ppc.c
  • [DBH] libavcodec/takdec.c
  • [DBH] libavcodec/x86/Makefile
  • [DBH] libavcodec/x86/audiodsp.asm
  • [DBH] libavcodec/x86/audiodsp.h
  • [DBH] libavcodec/x86/audiodsp_init.c
  • [DBH] libavcodec/x86/audiodsp_mmx.c
  • [DBH] libavcodec/x86/dsputil.asm
  • [DBH] libavcodec/x86/dsputil_init.c
  • [DBH] libavcodec/x86/dsputil_mmx.c
  • [DBH] libavcodec/x86/dsputil_x86.h