---
title: Image Buffer Display Mask Rectangle Keys
framework: corevideo
role: collectionGroup
role_heading: API Collection
path: corevideo/image-buffer-display-mask-rectangle-keys
---

# Image Buffer Display Mask Rectangle Keys

Keys that describe the display dimensions of an image buffer mask.

## Overview

Overview Use kCVImageBufferDisplayMaskRectangleKey to attach a dictionary value containing display mask information to the image buffer. kCVImageBufferDisplayMaskRectangleStereoLeftKey and kCVImageBufferDisplayMaskRectangleStereoRightKey perform the same function for left- and right-eye stereo images.

## Topics

### Constants

- [kCVImageBufferDisplayMaskRectangle_LeftEdgePointsKey](corevideo/kcvimagebufferdisplaymaskrectangle_leftedgepointskey.md)
- [kCVImageBufferDisplayMaskRectangle_RectangleHeightKey](corevideo/kcvimagebufferdisplaymaskrectangle_rectangleheightkey.md)
- [kCVImageBufferDisplayMaskRectangle_RectangleLeftKey](corevideo/kcvimagebufferdisplaymaskrectangle_rectangleleftkey.md)
- [kCVImageBufferDisplayMaskRectangle_RectangleTopKey](corevideo/kcvimagebufferdisplaymaskrectangle_rectangletopkey.md)
- [kCVImageBufferDisplayMaskRectangle_RectangleWidthKey](corevideo/kcvimagebufferdisplaymaskrectangle_rectanglewidthkey.md)
- [kCVImageBufferDisplayMaskRectangle_ReferenceRasterHeightKey](corevideo/kcvimagebufferdisplaymaskrectangle_referencerasterheightkey.md)
- [kCVImageBufferDisplayMaskRectangle_ReferenceRasterWidthKey](corevideo/kcvimagebufferdisplaymaskrectangle_referencerasterwidthkey.md)
- [kCVImageBufferDisplayMaskRectangle_RightEdgePointsKey](corevideo/kcvimagebufferdisplaymaskrectangle_rightedgepointskey.md)

## See Also

### Constants

- [Image Buffer Attachment Keys](corevideo/image-buffer-attachment-keys.md)
- [Image Buffer Clean Aperture Keys](corevideo/image-buffer-clean-aperture-keys.md)
- [Image Buffer Pixel Aspect Ratio Keys](corevideo/image-buffer-pixel-aspect-ratio-keys.md)
- [Image Buffer Display Dimensions Keys](corevideo/image-buffer-display-dimensions-keys.md)
- [Image Buffer Field Detail Constants](corevideo/image-buffer-field-detail-constants.md)
- [Image Buffer YCbCr Matrix Constants](corevideo/image-buffer-ycbcr-matrix-constants.md)
- [Image Buffer Color Primaries Constants](corevideo/image-buffer-color-primaries-constants.md)
- [Image Buffer Transfer Function Constants](corevideo/image-buffer-transfer-function-constants.md)
- [Image Buffer Chroma Location Constants](corevideo/image-buffer-chroma-location-constants.md)
- [Image Buffer Chroma Subsampling Constants](corevideo/image-buffer-chroma-subsampling-constants.md)
- [kCVImageBufferDisplayMaskRectangleKey](corevideo/kcvimagebufferdisplaymaskrectanglekey.md)
- [kCVImageBufferDisplayMaskRectangleStereoLeftKey](corevideo/kcvimagebufferdisplaymaskrectanglestereoleftkey.md)
- [kCVImageBufferDisplayMaskRectangleStereoRightKey](corevideo/kcvimagebufferdisplaymaskrectanglestereorightkey.md)