---
title: User data atom
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/movie_atom/user_data_atom
---

# User data atom

An atom where you define and store data associated with a QuickTime object.

## Overview

Overview For more information, see User data atoms.

## See Also

### Data fields

- [Size](quicktime-file-format/movie_atom/size.md)
- [Type](quicktime-file-format/movie_atom/type.md)
- [Profile atom](quicktime-file-format/movie_atom/profile_atom.md)
- [Movie header atom](quicktime-file-format/movie_atom/movie_header_atom.md)
- [Movie clipping atom](quicktime-file-format/movie_atom/movie_clipping_atom.md)
- [Track atoms](quicktime-file-format/movie_atom/track_atoms.md)
- [Color table atom](quicktime-file-format/movie_atom/color_table_atom.md)
- [Compressed movie atom](quicktime-file-format/movie_atom/compressed_movie_atom.md)
- [Reference movie atom](quicktime-file-format/movie_atom/reference_movie_atom.md)