---
title: Track ID
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/track_header_atom/track_id
---

# Track ID

A 32-bit integer that uniquely identifies the track.

## Overview

Overview The value 0 cannot be used.

## See Also

### Data fields

- [Size](quicktime-file-format/track_header_atom/size.md)
- [Type](quicktime-file-format/track_header_atom/type.md)
- [Version](quicktime-file-format/track_header_atom/version.md)
- [Flags](quicktime-file-format/track_header_atom/flags.md)
- [Creation time](quicktime-file-format/track_header_atom/creation_time.md)
- [Modification time](quicktime-file-format/track_header_atom/modification_time.md)
- [Reserved](quicktime-file-format/track_header_atom/reserved.md)
- [Duration](quicktime-file-format/track_header_atom/duration.md)
- [Reserved](quicktime-file-format/track_header_atom/reserved_2.md)
- [Layer](quicktime-file-format/track_header_atom/layer.md)
- [Alternate group](quicktime-file-format/track_header_atom/alternate_group.md)
- [Volume](quicktime-file-format/track_header_atom/volume.md)
- [Reserved](quicktime-file-format/track_header_atom/reserved_3.md)
- [Matrix structure](quicktime-file-format/track_header_atom/matrix_structure.md)
- [Track width](quicktime-file-format/track_header_atom/track_width.md)