---
title: Transfer function index
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/color_parameter_atom/transfer_function_index
---

# Transfer function index

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

## Overview

Overview The table of transfer function coefficients specifies the nonlinear function coefficients used to translate between the stored Y´CbCr values and a video capture or display system.

## 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)
- [Matrix index](quicktime-file-format/color_parameter_atom/matrix_index.md)