public static void _setLabels(TrakBox trakBox, Label[] labels) { ChannelBox channel = NodeBox.findFirstPath(trakBox, ChannelBox.class, new String[] { "mdia", "minf", "stbl", "stsd", null, "chan" }); if (channel == null) { channel = ChannelBox.createChannelBox(); NodeBox.findFirstPath(trakBox, SampleEntry.class, new String[] { "mdia", "minf", "stbl", "stsd", null }).add(channel); } setLabels(labels, channel); }