---
title: "Track input map atom ('imap')"
framework: quicktime-file-format
role: symbol
role_heading: Atom
path: quicktime-file-format/track_input_map_atom
---

# Track input map atom ('imap')

An atom that defines how data being sent to this track from its nonprimary sources is to be interpreted.

## Overview

Overview This atom contains one or more track input atoms. Note that the track input map atom is a QT atom structure. The layout of a track input map atom is as follows:  |   |   |   |

## Topics

### Data fields

- [Size](quicktime-file-format/track_input_map_atom/size.md)
- [Type](quicktime-file-format/track_input_map_atom/type.md)
- [Track input atoms](quicktime-file-format/track_input_map_atom/track_input_atoms.md)

## See Also

### Atoms for track input

- [Track input atom ('  in')](quicktime-file-format/track_input_atom.md)
- [Input type atom ('  ty')](quicktime-file-format/input_type_atom.md)
- [Object ID atom ('obid')](quicktime-file-format/object_id_atom.md)