Merge two audio mp4 file ?

I try to merge one audio mp4 file to another audio mp4 file.

Code:

String audio1 = path + “audio1.mp4”; String audio2 = path + “audio2.mp4”; String outputVideo = path + “audio_output.mp4”;

    Movie[] inMovies = new Movie[]{
            MovieCreator.build(audio1),
            MovieCreator.build(audio2),
    };

    List<Track> audioTracks = new LinkedList<Track>();

    for (Movie m : inMovies) {
        for (Track t : m.getTracks()) {
            if (t.getHandler().equals("soun")) {
                audioTracks.add(t);
            }
        }
    }

    Movie result = new Movie();

    if (audioTracks.size() > 0) {
        result.addTrack(new AppendTrack(audioTracks.toArray(new Track[audioTracks.size()])));
    }

    Container out = new DefaultMp4Builder().build(result);
    out.writeContainer(new FileOutputStream(outputVideo).getChannel());

Exception:

java.io.IOException: Cannot merge AudioSampleEntry{bytesPerSample=0, bytesPerFrame=0, bytesPerPacket=0, samplesPerPacket=0, packetSize=0, compressionId=0, soundVersion=0, sampleRate=44100, sampleSize=16, channelCount=2, boxes=[com.googlecode.mp4parser.boxes.mp4.ESDescriptorBox@0]} and AudioSampleEntry{bytesPerSample=0, bytesPerFrame=0, bytesPerPacket=0, samplesPerPacket=0, packetSize=0, compressionId=0, soundVersion=0, sampleRate=8000, sampleSize=16, channelCount=1, boxes=[com.googlecode.mp4parser.boxes.mp4.ESDescriptorBox@0]}

Is there any solution ?

[sannies]

So codec settings need to be the same: Same sample rate, same number of channels and so on. In the first mail I can see that Durim is trying to append 44.1KHz Stereo with 8KHz Mono. That cannot work. The basic properties

2016-01-28 8:54 GMT+02:00 yanchengdeng [e-mail]:

I have this problem too,please help me!

— Reply to this email directly or view it on GitHub https://github.com/sannies/mp4parser/issues/155#issuecomment-176019851.

[rohit101211993]

Can you suggest i want to merge audio at middle of first file (for example after 5 second of first audio) Audio 1 = 1111111111 Audio 2 = 0000000000 Output= 11111 000000000011111