---
title: Sample extensions
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/subtitle_sample_data/sample_extensions
---

# Sample extensions

One or more atoms containing additional information for selecting and drawing the subtitle.

## Overview

Overview The following table lists the currently defined subtitle sample extensions.  |   |   |   |   |

## See Also

### Data fields

- [Text size](quicktime-file-format/subtitle_sample_data/text_size.md)
- [Text](quicktime-file-format/subtitle_sample_data/text.md)