---
title: Matrix index
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/color_parameter_atom/matrix_index
---

# Matrix index

A 16-bit unsigned integer containing an index into a table specifying the transformation matrix coefficients used to translate between RGB color space values and Y´CbCr values.

## Overview

Overview The table of matrixes specifies the matrix used during the translation.

## See Also

### Data fields

- [Size](quicktime-file-format/color_parameter_atom/size.md)
- [Type](quicktime-file-format/color_parameter_atom/type.md)
- [Color parameter type](quicktime-file-format/color_parameter_atom/color_parameter_type.md)
- [Primaries index](quicktime-file-format/color_parameter_atom/primaries_index.md)
- [Transfer function index](quicktime-file-format/color_parameter_atom/transfer_function_index.md)