Elements-

var buff = new Buffer(100);
fs.open(file, 'r', function(err, fd) {
  fs.read(fd, buff, 0, 100, 0, function(err, bytesRead, buffer) {
    var start = buffer.indexOf(new Buffer('mvhd')) + 17;
    var timeScale = buffer.readUInt32BE(start, 4);
    var duration = buffer.readUInt32BE(start + 4, 4);
    var movieLength = Math.floor(duration/timeScale);
    
    console.log('time scale: ' + timeScale);
    console.log('duration: ' + duration);

Elements-

var fs = require('fs');

fs.readFile('test.png', function (err, data) {
  var pngHeader = new Buffer([137, 80, 78, 71, 13, 10, 26, 10]);
  var header = data.slice(0, 8);
  if(header.compare(pngHeader) != 0) {
    console.log('Invalid png file header!')
    process.exit();
  }
  var fileHeader = {

Elements-

Block b = ....
BlockFace[] sides = new BlockFace[] {BlockFace.NORTH, BlockFace.EAST, BlockFace.SOUTH, BlockFace.WEST};

     for(BlockFace bf : sides) {

        if(b.getRelative(bf, 1).getType() == b.getType()) {

            Inventory left = ((DoubleChestInventory)((InventoryHolder)b.getState()).getInventory()).getLeftSide();
            Inventory right = ((DoubleChestInventory)((InventoryHolder)b.getState()).getInventory()).getRightSide();