content: /**
   * Contains classes for the extraction and modelling of MP4 file format metadata.
   *
   * This MP4 reader package is handler based.  Each MP4 file is composed in a hierarchical structure that contains boxes.
   * Boxes all have the same initial structure, but the rest will change depending upon the box type.  A box can either be a
   * standalone (leaf) box or a container.
   *
   * Mp4Reader will recursively go through all of the boxes using the handlers to know which container/box should be read.
   * A new handler is created when the current container has an immediate ‘handler’ box.  This means that the way the
   * containing boxes are read may depend upon that information.  This is also very important because some boxes have
   * the same name and the only way to determine how to read this data is with the handler.
   *
   * Documentation: ISO/IEC 14496-12:2015
   *                https://standards.iso.org/ittf/PubliclyAvailableStandards/c068960_ISO_IEC_14496-12_2015.zip
   *                https://standards.iso.org/ittf/PubliclyAvailableStandards/index.html
   */
  package com.drew.metadata.mp4;
  