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

# Size

An unsigned 32-bit integer holding the size of the format atom.

## See Also

### Data fields

- [Type](quicktime-file-format/format_atom/type.md)
- [Data format](quicktime-file-format/format_atom/data_format.md)