Attempt to invoke virtual method 'void com.otaliastudios.transcoder.transcode.internal.AudioEngine.drainDecoder(int, java.nio.ByteBuffer, long, boolean)' on a null object reference

[siegie2000]

E/Transcoder: Fatal error while transcoding, this might be invalid format or bug in engine or Android.
java.lang.NullPointerException: Attempt to invoke virtual method 'void com.otaliastudios.transcoder.transcode.internal.AudioEngine.drainDecoder(int, java.nio.ByteBuffer, long, boolean)' on a null object reference
at com.otaliastudios.transcoder.transcode.AudioTrackTranscoder.onDrainDecoder(AudioTrackTranscoder.java:70)
at com.otaliastudios.transcoder.transcode.BaseTrackTranscoder.drainDecoder(BaseTrackTranscoder.java:250)
at com.otaliastudios.transcoder.transcode.BaseTrackTranscoder.transcode(BaseTrackTranscoder.java:165)
at com.otaliastudios.transcoder.engine.Engine.transcode(Engine.java:373)
at com.otaliastudios.transcoder.Transcoder$1.call(Transcoder.java:150)
at com.otaliastudios.transcoder.Transcoder$1.call(Transcoder.java:140)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)