super(TYPE);
for (Box box : boxes) { if (box instanceof HandlerBox) { return (HandlerBox) box; } } return null;
for (Box box : boxes) { if (box instanceof MediaHeaderBox) { return (MediaHeaderBox) box; } } return null;
for (Box box : boxes) { if (box instanceof MediaInformationBox) { return (MediaInformationBox) box; } } return null;