---
title: Size
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/movie_header_atom/size
---

# Size

A 32-bit integer that specifies the number of bytes in this movie header atom.

## See Also

### Data fields

- [Type](quicktime-file-format/movie_header_atom/type.md)
- [Version](quicktime-file-format/movie_header_atom/version.md)
- [Flags](quicktime-file-format/movie_header_atom/flags.md)
- [Creation time](quicktime-file-format/movie_header_atom/creation_time.md)
- [Modification time](quicktime-file-format/movie_header_atom/modification_time.md)
- [Time scale](quicktime-file-format/movie_header_atom/time_scale.md)
- [Duration](quicktime-file-format/movie_header_atom/duration.md)
- [Preferred rate](quicktime-file-format/movie_header_atom/preferred_rate.md)
- [Preferred volume](quicktime-file-format/movie_header_atom/preferred_volume.md)
- [Reserved](quicktime-file-format/movie_header_atom/reserved.md)
- [Matrix structure](quicktime-file-format/movie_header_atom/matrix_structure.md)
- [Preview time](quicktime-file-format/movie_header_atom/preview_time.md)
- [Preview duration](quicktime-file-format/movie_header_atom/preview_duration.md)
- [Poster time](quicktime-file-format/movie_header_atom/poster_time.md)
- [Selection time](quicktime-file-format/movie_header_atom/selection_time.md)