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# Flags

Three bytes that are reserved for the track header flags.

## Overview

These flags indicate how the track is used in the movie. The following flags are valid (all flags are enabled when set to 1).

- Track enabled: Indicates that the track is enabled. Flag value is `0x0001`.
- Track in movie: Indicates that the track is used in the movie. Flag value is `0x0002`.
- Track in preview: Indicates that the track is used in the movie’s preview. Flag value is `0x0004`.
- Track in poster: Indicates that the track is used in the movie’s poster. Flag value is `0x0008`.

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