Mux mp4 file with aac file

[İsmail Yıldız]

Hi,

I want to use the mp4parser in an android app.

I try to mux mp4 file with aac file. But i get: java.io.IOException: Expected Start Word 0xfff

I have the following Code for recording the audio:

myAudioRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
myAudioRecorder.setAudioSamplingRate(44100);
myAudioRecorder.setAudioEncodingBitRate(96000);
myAudioRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
myAudioRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);

String outputFile = "audio.aac";
myAudioRecorder.setOutputFile(outputFile);

try {
    myAudioRecorder.prepare();
    myAudioRecorder.start();
} catch (IllegalStateException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

Audio recording works.

And the following Code for mux mp4 with .aac

try {

    AACTrackImpl audio = new AACTrackImpl(new FileDataSourceImpl("audio.aac"));

    Movie movie = MovieCreator.build("video.mp4");
    movie.addTrack(audio);

    String outputfile = "video_with_audio.mp4";

    Mp4Builder defaultMp4Builder = new DefaultMp4Builder();
    Container c = defaultMp4Builder.build(movie);
    c.writeContainer(new FileOutputStream(outputfile).getChannel());


}catch (FileNotFoundException fnfe){
    fnfe.printStackTrace();

}catch(IOException ioe){
    ioe.printStackTrace();
}

I get java.io.IOException: Expected Start Word 0xfff in line

AACTrackImpl audio = new AACTrackImpl(new FileDataSourceImpl("audio.aac"));

Have someone a solution for this?

Regards Ismail