# isVideoHDREnabled A Boolean value that indicates whether the device streams high dynamic range video buffers, also known as extended dynamic range (EDR). ``` var isVideoHDREnabled: Bool { get set } ``` ## Discussion The device ignores the value of this property when [`activeColorSpace`](/documentation/AVFoundation/AVCaptureDevice/activeColorSpace) is HLG BT2020 color space because HDR is effectively always on and can’t be disabled. Before changing the value of this property, you must call [`lockForConfiguration()`](/documentation/AVFoundation/AVCaptureDevice/lockForConfiguration()) to acquire exclusive access to the device’s configuration properties. Otherwise, setting the value of this property raises an exception. When you finish configuring the device, call [`unlockForConfiguration()`](/documentation/AVFoundation/AVCaptureDevice/unlockForConfiguration()) to release the lock and allow other devices to configure the settings. Note that setting this property may cause a lengthy reconfiguration of the device, similar to setting a new active format or capture session preset. If you’re setting either the active format or the [`sessionPreset`](/documentation/AVFoundation/AVCaptureSession/sessionPreset) *and* this property, you should bracket these operations with [`beginConfiguration()`](/documentation/AVFoundation/AVCaptureSession/beginConfiguration()) and session [`commitConfiguration()`](/documentation/AVFoundation/AVCaptureSession/commitConfiguration()) to minimize reconfiguration time. This property is key-value observable. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)