EC3TrackImpl track = new EC3TrackImpl(new FileInputStream("/home/sannies/Solekai020_1920_23_75x1_Dolby_v2/Dolby_Channel-Check_Voice_8-ch_Discrete_24bit_48kHz_dn24_448.ec3"));
Movie m = new Movie();
m.addTrack(track);
DefaultMp4Builder mp4Builder = new DefaultMp4Builder();
IsoFile isoFile = mp4Builder.build(m);
FileOutputStream fos = new FileOutputStream("output.mp4");
isoFile.getBox(fos.getChannel());
fos.close();