---
title: "Item information atom ('itif')"
framework: quicktime-file-format
role: symbol
role_heading: Atom
path: quicktime-file-format/item_information_atom
---

# Item information atom ('itif')

An atom that contains information about the item, including item-specific flags and item optional identifier.

## Overview

Overview The optional item information atom contains information about the item: item-specific flags and item optional identifier. This ID must be unique within the metadata atom. To simplify assignment of item identifiers, the metadata header atom’s nextItemInfo field can be used as described in Metadata header atom ('mhdr'). The item information atom must be present if the item has an assigned ID or has nonzero flags. No flags are currently defined; they should be set to 0 in this version of the specification. The item information atom is a full atom with an atom type of ‘itif’.

## Topics

### Data fields

- [Size](quicktime-file-format/item_information_atom/size.md)
- [Type](quicktime-file-format/item_information_atom/type.md)
- [Version](quicktime-file-format/item_information_atom/version.md)
- [Flags](quicktime-file-format/item_information_atom/flags.md)
- [Item_ID](quicktime-file-format/item_information_atom/item_id.md)

## See Also

### Atoms

- [Country list atom ('ctry')](quicktime-file-format/country_list_atom.md)
- [Language list atom ('lang')](quicktime-file-format/language_list_atom.md)
- [Metadata item keys atom ('keys')](quicktime-file-format/metadata_item_keys_atom.md)
- [Metadata item list atom ('ilst')](quicktime-file-format/metadata_item_list_atom.md)
- [Metadata item atom](quicktime-file-format/metadata_item_atom.md)
- [Value atom](quicktime-file-format/value_atom.md)
- [Name atom ('name')](quicktime-file-format/name_atom.md)
- [Data atom ('data')](quicktime-file-format/data_atom.md)