# AVInterfaceVolumeControllable Provides volume and audio muting control for media content. ``` @protocol AVInterfaceVolumeControllable ``` ## Topics ### Instance Properties [`@property (nonatomic, readonly) BOOL hasAudio;`](/documentation/AVKit/AVInterfaceVolumeControllable/hasAudio) Indicates whether the media contains audio tracks and can produce sound output. Returns NO for video-only content, silent content, or when audio tracks are unavailable. Must be key-value observable. [`@property (nonatomic, readwrite, getter=isMuted) BOOL muted;`](/documentation/AVKit/AVInterfaceVolumeControllable/muted) Controls whether audio output is temporarily silenced. When YES, audio is muted regardless of the volume level setting. Must be key-value observable. [`@property (nonatomic, readwrite) float volume;`](/documentation/AVKit/AVInterfaceVolumeControllable/volume) The audio output level as a normalized value between 0.0 (completely silent) and 1.0 (maximum system volume). This value is independent of the muted state and represents the user’s volume preference. Must be key-value observable. ## Relationships ### Inherited By [`AVInterfaceControllable`](/documentation/AVKit/AVInterfaceControllable) ### Inherits From [`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol) --- 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)