---
title: "Track load settings atom ('load')"
framework: quicktime-file-format
role: symbol
role_heading: Atom
path: quicktime-file-format/track_load_settings_atom
---

# Track load settings atom ('load')

An atom that indicates how the track is to be used in its movie.

## Overview

Overview Track load settings atoms contain information that indicates how the track is to be used in its movie. Applications that read QuickTime files can use this information to process the movie data more efficiently. Track load settings atoms have an atom type value of 'load'. The layout of a track load settings atom is as follows.  |   |   |   |   |   |   |

## Topics

### Data fields

- [Size](quicktime-file-format/track_load_settings_atom/size.md)
- [Type](quicktime-file-format/track_load_settings_atom/type.md)
- [Preload start time](quicktime-file-format/track_load_settings_atom/preload_start_time.md)
- [Preload duration](quicktime-file-format/track_load_settings_atom/preload_duration.md)
- [Preload flags](quicktime-file-format/track_load_settings_atom/preload_flags.md)
- [Default hints](quicktime-file-format/track_load_settings_atom/default_hints.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)
- [Track matte atom ('matt')](quicktime-file-format/track_matte_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 reference atoms](quicktime-file-format/track_reference_atoms.md)
- [Track input map atoms](quicktime-file-format/track_input_map_atoms.md)