# keyframe(_:forParameter:channel:andIndex:) Returns the keyframe info for the keyframe at a given index. ``` func keyframe(_ keyframe: UnsafeMutablePointer, forParameter parameterID: Int, channel channelIndex: Int, andIndex keyframeIndex: Int) -> (any Error)? ``` ## Parameters `keyframe` A pointer to an FxKeyframeInfo structure to be filled out with the information about the keyframe in question. `parameterID` The ID of the parameter you want info about. `channelIndex` The index of the channel you want info about. `keyframeIndex` The index of the keyframe you wish to retrieve. --- 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)