---
title: "Reference movie atom ('rmra')"
framework: quicktime-file-format
role: symbol
role_heading: Atom
path: quicktime-file-format/reference_movie_atom
---

# Reference movie atom ('rmra')

A reference movie atom contains references to one or more movies.

## Overview

Overview It can optionally contain a list of system requirements in order for each movie to play, and a quality rating for each movie. It is typically used to specify a list of alternate movies to be played under different conditions. A reference movie atom’s parent is always a movie atom ('moov'). Only one reference movie atom is allowed in a given movie atom.

## Topics

### Data fields

- [Size](quicktime-file-format/reference_movie_atom/size.md)
- [Type](quicktime-file-format/reference_movie_atom/type.md)
- [Reference movie descriptor atom](quicktime-file-format/reference_movie_atom/reference_movie_descriptor_atom.md)

## See Also

### Describing reference movies

- [Reference movie descriptor atom ('rmda')](quicktime-file-format/reference_movie_descriptor_atom.md)
- [Data reference atom](quicktime-file-format/reference_movie_data_reference_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)