get 3044response code in coverting mp4 to mp3

[vidjanidhi]

final Command command = videoKit.createCommand()

            .inputPath("/storage/emulated/0/WhatsApp/Media/WhatsApp Video/VID-20181118-WA0003.mp4")
            .outputPath("/storage/emulated/0/abc.mp3")
            .customCommand("-vn -ar 44100 -ac 2 -ab 320 -f mp3")
            .build();

    new AsyncCommandExecutor(command, this).execute();

[vidjanidhi]

I have used above code for converting mp4 to mp3 format and does not getting success. Please help.