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• Android - Decoding via a pipe will not work : Could not find an ffmpeg binary for your system

  28 août 2017, par Daniele

  I’m trying to use TarsosDSP for real time pitch shifting on Android.

  This is my code :

  Uri song;
  
  // initialized in another method
  
  
  
  double rate = 1.0;
  
          RateTransposer rateTransposer;
  
          AudioDispatcher dispatcher;
  
          WaveformSimilarityBasedOverlapAdd wsola;
  
  
  
          dispatcher = AudioDispatcherFactory.fromPipe(getRealPathFromUri(song), 44100, 5000, 2500);
  
          rateTransposer = new RateTransposer(rate);
  
          wsola = new WaveformSimilarityBasedOverlapAdd(WaveformSimilarityBasedOverlapAdd.Parameters
  
                  .musicDefaults(rate, 44100));
  
  
  
          wsola.setDispatcher(dispatcher);
  
          dispatcher.addAudioProcessor(wsola);
  
          dispatcher.addAudioProcessor(rateTransposer);
  
          dispatcher.addAudioProcessor(new AndroidAudioPlayer(dispatcher.getFormat()));
  
          dispatcher.setZeroPadFirstBuffer(true);
  
          dispatcher.setZeroPadLastBuffer(true);

  I get an error here

  dispatcher = AudioDispatcherFactory.fromPipe(getRealPathFromUri(song), 44100, 5000, 2500);

  Decoding via a pipe will not work : Could not find an ffmpeg binary for
  your system

  Why does this happen and how should I fix it ?

  EDIT :

  As far as I was able to understand it’s because ffmpeg isn’t integrated within the app. I looked for a guide here on SO but I couldn’t find any updated one. Using NDK r15c and FFmpeg 3.3.3

• Révision 17019 : lorsque le file system fait la difference entre minuscules et majuscules, les pa...

  26 janvier 2011, par cedric@yterium.com

  On traite a l’affichage, mais il faudrait faire remonter ce passage en minuscules a la lecture du plugin.xml meme

• Unable to run command through Java, but can run it through cmd CreateProcess error=2, The system cannot find the file specified

  4 avril 2020, par Al G Johnston

  I am unable to convert my mp3s to wavs for easier data manipulation using Java. I can open a command prompt and copy the exact string stored in s when I debug and this will properly create the wav file. The code is below. I was able to use ffmpeg by building strings this way to split up a few mp3s into separate tracks based on a tracklist. I reinstalled Windows 10, so I'm assuming it has something to do with that. Is there a setting I have to change ? Why would it run in the command prompt, but not with Java ?

  



  package mp3towav;

import java.io.File;
import java.io.IOException;

public class Mp3towav {

    // mp3 folder
    public static final String MP3FOLDER = "C:\\Users\\Al\\Documents\\Sounds\\PokemonOST\\YellowOST\\MP3";

    public static void main(String[] args) throws IOException {

        // Gets the mp3 files and converts them to wav
        File mp3folder = new File(MP3FOLDER);

        String[] mp3s = mp3folder.list();

        File f;

        String s; 

        for(int i = 0; i < mp3s.length; i++) {
            f = new File(mp3s[i]);
            s = ("ffmpeg -i " + MP3FOLDER + "\\" + f.getName() + " " + (MP3FOLDER + "\\" + f.getName()).replaceAll("MP3", "WAV").replaceAll("mp3", "wav"));
            Runtime.getRuntime().exec(s);
            System.out.println("test");
        }



    }

}


  



  Edit :

  



  So I never got Java to use PATH, but added in the absolute path to the ffmpeg executable in Java.