---
title: Data reference atom
framework: quicktime-file-format
role: symbol
role_heading: Atom
path: quicktime-file-format/reference_movie_data_reference_atom
---

# Data reference atom

An atom that contains the information necessary to locate a movie, stream or file.

## Overview

Overview The information to locate a movie, stream, or file is typically in the form of a URL or a file alias. Only one data reference atom is allowed in a given movie reference descriptor atom.

## Topics

### Data fields

- [Size](quicktime-file-format/reference_movie_data_reference_atom/size.md)
- [Type](quicktime-file-format/reference_movie_data_reference_atom/type.md)
- [Flags](quicktime-file-format/reference_movie_data_reference_atom/flags.md)
- [Data reference type](quicktime-file-format/reference_movie_data_reference_atom/data_reference_type.md)
- [Data reference size](quicktime-file-format/reference_movie_data_reference_atom/data_reference_size.md)
- [Data reference](quicktime-file-format/reference_movie_data_reference_atom/data_reference.md)

## See Also

### Describing reference movies

- [Reference movie atom ('rmra')](quicktime-file-format/reference_movie_atom.md)
- [Reference movie descriptor atom ('rmda')](quicktime-file-format/reference_movie_descriptor_atom.md)
- [Data rate atom ('rmdr')](quicktime-file-format/data_rate_atom.md)
- [CPU speed atom ('rmcs')](quicktime-file-format/cpu_speed_atom.md)
- [Version check atom ('rmvc')](quicktime-file-format/version_check_atom.md)
- [Component detect atom ('rmcd')](quicktime-file-format/component_detect_atom.md)
- [Movie importer component flags](quicktime-file-format/movie_importer_component_flags.md)
- [Quality atom ('rmqu')](quicktime-file-format/quality_atom.md)