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

# Size

A 32-bit unsigned integer that indicates the size in bytes of the atom structure.

## See Also

### Data fields

- [Type](quicktime-file-format/metadata_key_table_atom/type.md)
- [Metadata key table](quicktime-file-format/metadata_key_table_atom/metadata_key_table.md)