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• subprocess.Popen can't find the file when shell=False and doesn't know ffmpeg when shell=True [duplicate]

  26 novembre 2023, par Waschbrettwade

  I am trying to get an offline speech-to-text library called "vosk" running following this tutorial : https://medium.com/@johnidouglasmarangon/automatic-speech-recognition-with-vosk-828569219f2b

  


  In this, subprocess.Popen is being used like this :

  


  ffmpeg_command = [
            "ffmpeg",
            "-nostdin",
            "-loglevel",
            "quiet",
            "-i",
            filename,
            "-ar",
            str(SAMPLE_RATE),
            "-ac",
            "1",
            "-f",
            "s16le",
            "-",
        ]

    with subprocess.Popen(ffmpeg_command, stdout=subprocess.PIPE) as process:


  


  When running this in Jupyter Notebook, no problem at all. But whenever I run this in VSCode, it produces the error :

  


  FileNotFoundError: [WinError 2] The system couldn't find the specified file (translated to English by me)


  


  When using shell=True as in

  


  with subprocess.Popen(ffmpeg_command, stdout=subprocess.PIPE, shell=True) as process:


  


  it tells me in the terminal (translated) :

  


  The command "ffmpeg" ist either written wrong or couldn't be found. 


  


  Do you have any idea what's causing these issues and how to fix them ?

  


• Is there any faster way of synchronize the Drive from Colab

  18 novembre 2018, par jperezmartin

  I need to extract many frames of the videos of one dataset stored in Google Drive from colab code. I mounted drive with

  from google.colab import drive
  
  drive.mount('/content/gdrive')

  I am generating and saving the frames with ffmpeg library calling a subprocess.

  subprocess.call(["ffmpeg", "-i", src, dest])

  or

  subprocess.check_call(["ffmpeg", "-i", src, dest])

  The files .jpg are uploaded in drive but not fast. And, at a certain point the synchronization stops, having executed the generation process on the whole dataset in colab.

• function and variable "chicken or the egg" scenario

  17 mars 2014, par user3426923

  I'm making a simple program to run in C++ to do ffmpeg for me, but I have the problem of needing certain variables defined in the "main", but the function needs to be above main to be ready to be used. what can I do ?

  #include <iostream>
  
  #include <cstdlib>
  
  
  
  using namespace std;
  
  
  
  int convert()
  
  {
  
      int operation;
  
      switch(operation){
  
          case &#39;1&#39;:
  
  
  
          case &#39;2&#39;:
  
  
  
          case &#39;3&#39;:
  
  
  
          case &#39;4&#39;:
  
              ;
  
      }
  
      return 0;
  
  }
  
  int main()
  
  {
  
      std::string formatIn;
  
      std::string FormatOut;
  
      std::string confirm;
  
      cout &lt;&lt; "select format that file is currently in: mp3, gp3, mp4, flv" &lt;&lt; endl;
  
      cin >> formatIn;
  
      cout &lt;&lt; "original format = " &lt;&lt; formatIn &lt;&lt; endl;
  
      cout &lt;&lt; "choose your target format: mp3, gp3, mp4, flv" &lt;&lt; endl;
  
      cin >> FormatOut;
  
      cout &lt;&lt; "selected format = " &lt;&lt; FormatOut &lt;&lt; endl;
  
      cout &lt;&lt; "proceed? ";
  
      cin >> confirm;
  
      if(confirm == "yes"){
  
      cout &lt;&lt; "proceeding with operation:" &lt;&lt; endl;
  
      convert();
  
      }
  
      else{
  
              if(confirm == "no"){
  
              cout &lt;&lt; "canceling,,," &lt;&lt; endl;
  
              }
  
      }
  
  }
  
  </cstdlib></iostream>