---
title: Sample size
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/sample_size_atom/sample_size
---

# Sample size

A 32-bit integer specifying the sample size.

## Overview

Overview If all the samples are the same size, this field contains that size value. If this field is set to 0, then the samples have different sizes, and those sizes are stored in the sample size table.

## See Also

### Data fields

- [Size](quicktime-file-format/sample_size_atom/size.md)
- [Type](quicktime-file-format/sample_size_atom/type.md)
- [Version](quicktime-file-format/sample_size_atom/version.md)
- [Flags](quicktime-file-format/sample_size_atom/flags.md)
- [Number of entries](quicktime-file-format/sample_size_atom/number_of_entries.md)
- [Sample size table](quicktime-file-format/sample_size_atom/sample_size_table.md)