# keyframeCount(_:forParameter:andChannel:) Returns the number of keyframes for a parameter’s channel. ``` func keyframeCount(_ count: UnsafeMutablePointer, forParameter parameterID: Int, andChannel channelIndex: Int) -> (any Error)? ``` ## Parameters `count` Receives the number of keyframes in the given channel. `parameterID` The ID of the parameter you want to get the keyframe count for. `channelIndex` The index of the channel within the parameter that you want to retrieve the keyframe count from. ## Return Value If any errors occur while getting the keyframe count, the return value will be a pointer to an `NSError` describing the problem. Otherwise, the return value is `nil`. ## Discussion Given a parameter, you can get the number of keyframes for any one of its channels. For a slider, toggle button (checkbox), or angle parameter, there will be only 1 channel (indexed starting at `0`), whereas a point parameter will have 2 channels (x and y), and a color channel will have 4 (R, G, B, and A). --- 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)