this.super(TrackHeaderAtom).constructor.call(this, buffer, offset);
}
-TrackHeaderAtom.prototype = Object.create(Atom.prototype);
+TrackHeaderAtom.prototype = Object.create(VersionFlagsAtom.prototype);
TrackHeaderAtom.prototype.setDefaults = function() {
this.super(TrackHeaderAtom).setDefaults.call(this);