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

# Size

A 32-bit integer that specifies the number of bytes in this track input map atom.

## See Also

### Data fields

- [Type](quicktime-file-format/track_input_map_atom/type.md)
- [Track input atoms](quicktime-file-format/track_input_map_atom/track_input_atoms.md)