---
title: "Track aperture mode dimensions atom ('tapt')"
framework: quicktime-file-format
role: symbol
role_heading: Atom
path: quicktime-file-format/track_aperture_mode_dimensions_atom
---

# Track aperture mode dimensions atom ('tapt')

A container atom that stores information for video correction in the form of three required atoms.

## Mentioned in

QuickTime File Format change log

## Overview

Overview This atom is optionally included in the track atom. The type of the track aperture mode dimensions atom is ‘tapt’. The layout of a track aperture mode dimensions atom is as follows.  |   |   |   |   |   |

## Topics

### Data fields

- [Size](quicktime-file-format/track_aperture_mode_dimensions_atom/size.md)
- [Type](quicktime-file-format/track_aperture_mode_dimensions_atom/type.md)
- [Track clean aperture dimensions atom](quicktime-file-format/track_aperture_mode_dimensions_atom/track_clean_aperture_dimensions_atom.md)
- [Track production aperture dimensions atom](quicktime-file-format/track_aperture_mode_dimensions_atom/track_production_aperture_dimensions_atom.md)
- [Track encoded pixels dimensions atom](quicktime-file-format/track_aperture_mode_dimensions_atom/track_encoded_pixels_dimensions_atom.md)

## See Also

### Track aperture mode dimension atoms

- [Track clean aperture dimensions atom ('clef')](quicktime-file-format/track_clean_aperture_dimensions_atom.md)
- [Track production aperture dimensions atom ('prof')](quicktime-file-format/track_production_aperture_dimensions_atom.md)
- [Track encoded pixels dimensions atom ('enof')](quicktime-file-format/track_encoded_pixels_dimensions_atom.md)