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• android:How to build ffmpeg on ubuntu

  19 juin 2013, par Pratik

  I have requirement to merge two mp3 so i want to do that using ffmpeg.for that i have to first build this library.

  can anyone post the steps ?How to build the library on Ubuntu ?

  brief description also would be appreciated.

  any reference,tutorial and help would be appreciated.

• What h.264 format loads on android AND IOS ?

  13 février 2017, par JKirchartz

  Theoretically both IOS and ANDROID will play h.264 files, but I can’t figure out a setting to encode them so they actually work cross platform. Does anybody know how to encode for both Android and IOS using one file ?

  p.s. I know all about html5 video and the fallback sources, I just don’t want to encode and host a new video for every device that comes down the pike.

• Getting an error while using JAVE library in an Android project

  27 mai 2015, par Archer2486

  I’m using an external library called JAVE in my Android project in order to extract the audio from a video file.

  My code :

   public void extractAudio() {
  
      File source = new File(Environment.getExternalStorageDirectory().getPath() + "/test.flv");
  
      File target = new File(Environment.getExternalStorageDirectory().getPath() + "/test.mp3");
  
      AudioAttributes audio = new AudioAttributes();
  
      audio.setCodec("libmp3lame");
  
      audio.setBitRate(new Integer(128000));
  
      audio.setChannels(new Integer(2));
  
      audio.setSamplingRate(new Integer(44100));
  
      EncodingAttributes attrs = new EncodingAttributes();
  
      attrs.setFormat("mp3");
  
      attrs.setAudioAttributes(audio);
  
      Encoder encoder = new Encoder();
  
      try {
  
          encoder.encode(source, target, attrs);
  
      } catch (IllegalArgumentException e) {
  
          e.printStackTrace();
  
      } catch (InputFormatException e) {
  
          e.printStackTrace();
  
      } catch (EncoderException e) {
  
          e.printStackTrace();
  
      }
  
  }

  These are the errors I get :

  11-09 18:26:49.874: W/System.err(6594): java.io.IOException: Error running exec(). Command: [/bin/chmod, 755, /sdcard/jave-1/ffmpeg] Working Directory: null Environment: null
  
  11-09 18:26:49.874: W/System.err(6594):     at java.lang.ProcessManager.exec(ProcessManager.java:211)
  
  11-09 18:26:49.874: W/System.err(6594):     at java.lang.Runtime.exec(Runtime.java:168)
  
  11-09 18:26:49.884: W/System.err(6594):     at java.lang.Runtime.exec(Runtime.java:123)
  
  11-09 18:26:49.884: W/System.err(6594):     at it.sauronsoftware.jave.DefaultFFMPEGLocator.<init>(DefaultFFMPEGLocator.java:85)
  
  11-09 18:26:49.884: W/System.err(6594):     at it.sauronsoftware.jave.Encoder.<init>(Encoder.java:111)
  
  11-09 18:26:49.884: W/System.err(6594):     at com.yt.ringtones.RipActivity.extractAudio(RipActivity.java:236)
  
  11-09 18:26:49.894: W/System.err(6594):     at com.yt.ringtones.RipActivity$1$DownloadFromUrl.onPostExecute(RipActivity.java:94)
  
  11-09 18:26:49.894: W/System.err(6594):     at com.yt.ringtones.RipActivity$1$DownloadFromUrl.onPostExecute(RipActivity.java:1)
  
  11-09 18:26:49.894: W/System.err(6594):     at android.os.AsyncTask.finish(AsyncTask.java:602)
  
  11-09 18:26:49.894: W/System.err(6594):     at android.os.AsyncTask.access$600(AsyncTask.java:156)
  
  11-09 18:26:49.986: W/System.err(6594):     at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:615)
  
  11-09 18:26:49.986: W/System.err(6594):     at android.os.Handler.dispatchMessage(Handler.java:99)
  
  11-09 18:26:49.986: W/System.err(6594):     at android.os.Looper.loop(Looper.java:137)
  
  11-09 18:26:49.994: W/System.err(6594):     at android.app.ActivityThread.main(ActivityThread.java:4424)
  
  11-09 18:26:49.994: W/System.err(6594):     at java.lang.reflect.Method.invokeNative(Native Method)
  
  11-09 18:26:49.994: W/System.err(6594):     at java.lang.reflect.Method.invoke(Method.java:511)
  
  11-09 18:26:50.014: W/System.err(6594):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
  
  11-09 18:26:50.014: W/System.err(6594):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
  
  11-09 18:26:50.024: W/System.err(6594):     at dalvik.system.NativeStart.main(Native Method)
  
  11-09 18:26:50.024: W/System.err(6594): Caused by: java.io.IOException: No such file or directory
  
  11-09 18:26:50.024: W/System.err(6594):     at java.lang.ProcessManager.exec(Native Method)
  
  11-09 18:26:50.034: W/System.err(6594):     at java.lang.ProcessManager.exec(ProcessManager.java:209)
  
  </init></init>

  I’m rather new to Android development and I’m not really sure what’s the problem here. I’d appreciate any help.