---
title: Metadata handler atom
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/metadata_atom/metadata_handler_atom
---

# Metadata handler atom

An atom that defines the structure used for all types of metadata stored within the metadata atom.

## Overview

Overview For more information, see Metadata handler atom ('hdlr').

## See Also

### Data fields

- [Size](quicktime-file-format/metadata_atom/size.md)
- [Type](quicktime-file-format/metadata_atom/type.md)
- [Metadata header atom](quicktime-file-format/metadata_atom/metadata_header_atom.md)
- [Metadata item keys atom](quicktime-file-format/metadata_atom/metadata_item_keys_atom.md)
- [Metadata item list atom](quicktime-file-format/metadata_atom/metadata_item_list_atom.md)
- [Country list atom](quicktime-file-format/metadata_atom/country_list_atom.md)
- [Language list atom](quicktime-file-format/metadata_atom/language_list_atom.md)