---
title: "Track matte atom ('matt')"
framework: quicktime-file-format
role: symbol
role_heading: Atom
path: quicktime-file-format/track_matte_atom
---

# Track matte atom ('matt')

An atom you use to visually blend the track’s image when it is displayed.

## Overview

Overview Track matte atoms are used to visually blend the track’s image when it is displayed. Track matte atoms have an atom type value of 'matt'. The layout of a track matte atom is as follows.  |   |   |   |

## Topics

### Data fields

- [Size](quicktime-file-format/track_matte_atom/size.md)
- [Type](quicktime-file-format/track_matte_atom/type.md)
- [Compressed matte atom](quicktime-file-format/track_matte_atom/compressed_matte_atom.md)

## See Also

### Describing tracks

- [Track atom ('trak')](quicktime-file-format/track_atom.md)
- [Track header atom ('tkhd')](quicktime-file-format/track_header_atom.md)
- [Track exclude from autoselection atom ('txas')](quicktime-file-format/track_exclude_from_autoselection_atom.md)
- [Track aperture mode dimension atoms](quicktime-file-format/track_aperture_mode_dimension_atoms.md)
- [Clipping atom ('clip')](quicktime-file-format/clipping_atom.md)
- [Clipping region atom ('crgn')](quicktime-file-format/clipping_region_atom.md)
- [Compressed matte atom ('kmat')](quicktime-file-format/compressed_matte_atom.md)
- [Edit atom ('edts')](quicktime-file-format/edit_atom.md)
- [Edit list atom ('elst')](quicktime-file-format/edit_list_atom.md)
- [Playing with edit lists](quicktime-file-format/playing_with_edit_lists.md)
- [Track load settings atom ('load')](quicktime-file-format/track_load_settings_atom.md)
- [Track reference atoms](quicktime-file-format/track_reference_atoms.md)
- [Track input map atoms](quicktime-file-format/track_input_map_atoms.md)