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# Data information atom ('dinf')

An atom that specifies the data handler component that provides access to the media data.

## Overview

The handler reference atom (described in Handler Reference Atoms) contains information specifying the data handler component that provides access to the media data. The data handler component uses the data information atom to interpret the media’s data. Data information atoms have an atom type value of `'dinf'`.

## Topics

### Data fields

[`Size`](/documentation/quicktime-file-format/Data_information_atom/Size)

A 32-bit integer that specifies the number of bytes in this data information atom.

[`Type`](/documentation/quicktime-file-format/Data_information_atom/Type)

A 32-bit integer that identifies the atom type.

[`Data reference atom`](/documentation/quicktime-file-format/Data_information_atom/Data_reference_atom)

An atom that contains tabular data that instructs the data handler component how to access the media’s data.


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