---
title: Base media information header atom
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/base_media_information_atom/base_media_information_header_atom
---

# Base media information header atom

An atom that indicates that this media information atom pertains to a base media.

## Overview

Overview See Base media information header atom ('gmhd').

## See Also

### Data fields

- [Size](quicktime-file-format/base_media_information_atom/size.md)
- [Type](quicktime-file-format/base_media_information_atom/type.md)