title: extract audio in MP3 format from video in android
body: <p>I want to convert a video file to mp3 file in android.</p>
  
  <p>I am using the below code to convert video to MP3:</p>
  
  <pre><code>File source = new File(sourceFile);
  File target = new File(destFile);
  audioAttributes = new AudioAttributes();
  
  audioAttributes.setCodec("libmp3lame");
  audioAttributes.setBitRate(new Integer(128000));
  audioAttributes.setChannels(new Integer(2));
  audioAttributes.setSamplingRate(new Integer(44100));
  
  EncodingAttributes encodingAttributes = new EncodingAttributes();
  encodingAttributes.setFormat("mp3");
  encodingAttributes.setAudioAttributes(audioAttributes);
  
  Encoder encoder = new Encoder();
  
  try {
      encoder.encode(source, target, encodingAttributes);
  } catch (EncoderException e) {
      e.printStackTrace();
  }
  </code></pre>
  
  <p>But it is not working. Here is the error that I'm getting:</p>
  
  <pre><code>java.io.IOException: Error running exec(). Command: [/bin/chmod, 755, /data/data/com.example.videotomp3_demo/cache/jave-1/ffmpeg] Working Directory: null Environment: null
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at java.lang.ProcessManager.exec(ProcessManager.java:211)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at java.lang.Runtime.exec(Runtime.java:173)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at java.lang.Runtime.exec(Runtime.java:128)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at it.sauronsoftware.jave.DefaultFFMPEGLocator.&lt;init&gt;(DefaultFFMPEGLocator.java:85)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at it.sauronsoftware.jave.Encoder.&lt;init&gt;(Encoder.java:111)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at com.example.videotomp3_demo.MainActivity.onCreate(MainActivity.java:50)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at android.app.Activity.performCreate(Activity.java:6005)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1111)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2446)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2555)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at android.app.ActivityThread.access$800(ActivityThread.java:176)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1437)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:111)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at android.os.Looper.loop(Looper.java:194)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:5576)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at java.lang.reflect.Method.invoke(Method.java:372)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:956)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:751)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err: Caused by: java.io.IOException: No such file or directory
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at java.lang.ProcessManager.exec(Native Method)
  12-01 15:19:04.116 19702-19702/com.example.videotomp3_demo W/System.err:     at java.lang.ProcessManager.exec(ProcessManager.java:209)
  </code></pre>
  
  <p>Any idea on what could be wrong?</p>