# durationTime(_:ofImageParameter:) Provides the duration of the clip the user assigns to the given image parameter for the effect. ``` func durationTime(_ duration: UnsafeMutablePointer!, ofImageParameter parameterID: UInt32) ``` ## Parameters `duration` The duration of the clip, in `CMTime`. `parameterID` The ID of the image parameter. ## Discussion In Motion, duration represents the duration of the the image well input after the user has trimmed or retimed it. --- 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)