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• Using sauronsoftware's Jave in phonegap Android project

  4 septembre 2015, par Dread Boy

  I’m developing phonegap app and right now I’m trying to write a plugin to convert .amr files to .mp3 files. I’m using JAVE to do this conversion and while it’s working on desktop it fails on android with this exception :

  java.io.IOException: Error running exec(). 
  
  Command: [/data/data//cache/jave-1/ffmpeg, -i, /sdcard/.amr, -vn, -acodec, libmp3lame, -f, mp3, -y, /sdcard/.mp3] 
  
  Working Directory: null Enviroment: null

  I’m trying to do conversion like this :

  private void convert(String input_file, CallbackContext callbackContext){
  
    File input = new File(input_file);
  
    File output = new File(input_file.replace(".amr", ".mp3"));
  
  
  
    Encoder encoder = new Encoder();
  
    EncodingAttributes encodingAttributes = new EncodingAttributes();
  
    AudioAttributes audioAttributes = new AudioAttributes();
  
    audioAttributes.setCodec("libmp3lame");
  
    encodingAttributes.setAudioAttributes(audioAttributes);
  
    encodingAttributes.setFormat("mp3");
  
  
  
    try{
  
      encoder.encode(input, output, encodingAttributes);
  
      input.delete();
  
      callbackContext.success("finished");
  
    }
  
    catch(Exception e){
  
       callbackContext.error(e.getMessage());
  
    }
  
  }

  I found this answer and I understand why error happens but the answer doesn’t provide any solution. Is there a way to get this working in Phonegap project ? Do I need to package ffmpeg library together with plugin and copy it to correct folder when app invokes the plugin ?

  /data/data//cache/jave-1 

• How to concatenate videos using FFMPEG in android using guardian project

  12 juin 2014, par Divya Motiwala

  I am trying to combine two mp4 videos using guardian project as library project in my app. But it does not generate the output at specified location. I went through various solution for it but no success.
  PFB the code :

  File fileTmp = this.getCacheDir(); 
  
  File fileAppRoot = new File(this.getApplicationInfo().dataDir);
  
  
  
  FfmpegController fc;
  
  
  
  fc = new FfmpegController(fileTmp, fileAppRoot);
  
  
  
  
  
  
  
      final Clip out = new Clip(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)+"/Video/compiled.mp4");
  
  
  
      ArrayList<clip> listVideos = new ArrayList<clip>();
  
  
  
      File fileVideoRoot = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)+"/Video");
  
      String[] fileList = fileVideoRoot.list();
  
  
  
      for (String fileVideo : fileList)
  
      {
  
          if (fileVideo.endsWith("mp4"))
  
          {
  
              Clip clip = new Clip();
  
              clip.path = new File(fileVideoRoot,fileVideo).getCanonicalPath();
  
  
  
              fc.getInfo(clip);
  
  
  
              clip.duration = clip.duration-1;
  
              listVideos.add(clip);
  
  
  
  
  
          }
  
      }
  
  
  
  
  
      fc.concatAndTrimFilesMP4Stream(listVideos, out, false, false, new ShellUtils.ShellCallback() {
  
  
  
          @Override
  
          public void shellOut(String shellLine) {
  
  
  
              System.out.println("fc>" + shellLine);
  
          }
  
  
  
          @Override
  
          public void processComplete(int exitValue) {
  
  
  
              if (exitValue &lt; 0)
  
                  System.err.println("concat non-zero exit: " + exitValue);
  
  
  
          }
  
      });
  
  </clip></clip>

  I am getting exception :

  There was a problem rendering the video :
  /mnt/sdcard/Download/Video/compiled.mp4

  Please guide me on how to concatenate videos in android.

• executing batch file when called from java project

  28 décembre 2013, par Mostafa Wasat

  So I'm working on a java project, that at some point I have to execute a batch file (from within the code).

  The batch file runs fine if I run it by double clicking in windows explorer,
  and/or even if I write the command in the command prompt it runs ok.

  However, when i call the file from the java code, the command prompt launches and says that its not a recognized command, program, or batch file.

  the patch file looks something like this :

  ffmpeg -re -i C:/001.mp3 -c:a mp3 -ar 12000 -f mulaw -f rtp rtp://127.0.0.1:1234

  and here's how I call it within the java code :

  Runtime.getRuntime().exec("cmd /c start c:\\encode.bat");

  I might add that the command prompt when run by java it runs as administrator and I have included the ffmpeg path to be run by any user anyway.

  Excuse me if I have missed any important details and would be happy to provide them if anyone needs further details to answer my dilemma.

  why might this be ?

  Edit :
  i have tried the same code on another pc and it works fine, can someone please explain to me why the command doesnt get recognized when the command prompt gets run through java