This class represents a file in ISO base media file format as described in ISO/IEC 14496 Part 12 standard.

The ISO Base Media File Format is designed to contain timed media information for a presentation in a flexible, extensible format that facilitates interchange, management, editing, and presentation of the media. This presentation may be local to the system containing the presentation, or may be via a network or other stream delivery mechanism.

The file structure is object-oriented; a file can be decomposed into constituent objects very simply, and the structure of the objects inferred directly from their type. The file format is designed to be independent of any particular network protocol while enabling efficient support for them in general.

The ISO Base Media File Format is a base format for media file formats.

An overall view of the normal encapsulation structure is provided in the following table.

The table shows those boxes that may occur at the top-level in the left-most column; indentation is used to show possible containment. Thus, for example, a Track Header Box is found in a Track Box, which is found in a Movie Box. Not all boxes need be used in all files; the mandatory boxes are marked with bold typeface. See the description of the individual boxes for a discussion of what must be assumed if the optional boxes are not present.

User data objects shall be placed only in Movie or Track Boxes, and objects using an extended type may be placed in a wide variety of containers, not just the top level.

• ftyp -- File Type Box; file type and compatibility
• pdin -- Progressive Download Information Box
• moov -- Movie Box; container for all the metadata
  • mvhd -- Movie Header Box; overall declarations
  • trak -- Track Box; container for an individual track or stream
    • tkhd -- Track Header Box; overall information about the track
    • tref -- Track Reference Box
    • edts -- Edit Box
      • elst -- Edit List Box
    • mdia -- Media Box
      • mdhd -- Media Header Box; overall information about the media
      • hdlr -- Handler Reference Box; declares the media type
      • minf -- Media Information Box
        • vmhd -- Video Media Header Box; overall information (video track only)
        • smhd -- Sound Media Header Box; overall information (sound track only)
        • hmhd -- Hint Media Header Box; overall information (hint track only)
        • nmhd -- Null Media Header Box; overall information (some tracks only)
        • dinf -- Data Information Box
          • dref -- Data Reference Box
        • stbl -- Sample Table Box
          • stsd -- Sample Descriptions Box
          • stts -- Decoding Time To Sample Box
          • ctts -- Composition Time To Sample Box
          • stsc -- Sample To Chunk Box
          • stsz -- Sample Size Box
          • stz2 -- Compact Sample Size Box
          • stco -- Chunk Offset Box; 32-bit
          • co64 -- Chunk Ooffset Box; 64-bit
          • stss -- Sync Sample Table Box
          • stsh -- Shadow Sync Sample Table Box
          • padb -- Padding Bits Box
          • stdp -- Sample Degradation Priority Box
          • sdtp -- Independent and Disposable Samples Box
          • sbgp -- Sample To Group Box
          • sgpd -- Sample Group Description
          • subs -- Sub-Sample Information Box
  • mvex -- Movie Extends Box
    • mehd -- Movie Extends Header Box
    • trex -- Track Extends Box
  • ipmc -- IPMP Control Box
• moof -- Movie Fragment Box
  • mfhd -- Movie Fragment Header Box
  • traf -- Track Fragment Box
    • tfhd -- Track Fragment Header Box
    • trun -- Track Fragment Run
    • sdtp -- Independent and Disposable Samples
    • sbgp -- !SampleToGroup Box
    • subs -- Sub-Sample Information Box
• mfra -- Movie Fragment Random Access Box
  • tfra -- Track Fragment Random Access Box
  • mfro -- Movie Fragment Random Access Offset Box
• mdat -- Media Data Box
• free -- Free Space Box
• skip -- Free Space Box
  • udta -- User Data Box
    • cprt -- Copyright Box
• meta -- The Meta Box
  • hdlr -- Handler Reference Box; declares the metadata type
  • dinf -- Data Information Box
    • dref -- Data Reference Box; declares source(s) of metadata items
  • ipmc -- IPMP Control Box
  • iloc -- Item Location Box
  • ipro -- Item Protection Box
    • sinf -- Protection Scheme Information Box
      • frma -- Original Format Box
      • imif -- IPMP Information Box
      • schm -- Scheme Type Box
      • schi -- Scheme Information Box
  • iinf -- Item Information Box
    • infe -- Item Information Entry Box
  • xml -- XML Box
  • bxml -- Binary XML Box
  • pitm -- Primary Item Reference Box

There are two non-standard extensions to the ISO 14496 standard that add the ability to include file meta information. Both the boxes reside under moov.udta.meta.

• moov -- Movie Box; container for all the metadata
• udta -- User Data Box
• meta -- The Meta Box
  • ilst -- The iTunes/iPod Tag Container Box
  • id32 -- The ID3v2 Box

• author: Sven Vollbehr <svollbehr@gmail.com>
• version: $Rev: 101 $
• copyright: Copyright (c) 2008 PHP Reader Project Workgroup
• license: New BSD License

Located in /ISO14496.php (line 248)

ISO14496_Box
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   --ISO14496

Inherited Variables

Inherited from ISO14496_Box

ISO14496_Box::$_reader

Inherited Methods

Inherited From ISO14496_Box

ISO14496_Box::__construct()
ISO14496_Box::addBox()
ISO14496_Box::constructBoxes()
ISO14496_Box::getBoxes()
ISO14496_Box::getBoxesByIdentifier()
ISO14496_Box::getContainer()
ISO14496_Box::getOffset()
ISO14496_Box::getOption()
ISO14496_Box::getOptions()
ISO14496_Box::getParent()
ISO14496_Box::getSize()
ISO14496_Box::getType()
ISO14496_Box::hasBox()
ISO14496_Box::isContainer()
ISO14496_Box::setContainer()
ISO14496_Box::setOffset()
ISO14496_Box::setOption()
ISO14496_Box::setOptions()
ISO14496_Box::setParent()
ISO14496_Box::setSize()
ISO14496_Box::setType()
ISO14496_Box::__get()
ISO14496_Box::__isset()
ISO14496_Box::__set()
ISO14496_Box::__toString()
ISO14496_Box::__unset()