---
title: "channelCount(_:forParameter:)"
framework: Professional Video Applications
role: symbol
role_heading: Instance Method
platforms: [fxplug 4.0+]
path: "professional_video_applications/fxkeyframeapi_v3/channelcount(_:forparameter:)"
---

# channelCount(_:forParameter:)

Returns the number of channels in a parameter.

## Declaration

```swift
func channelCount(_ count: UnsafeMutablePointer<Int>, forParameter parameterID: Int) -> (any Error)?
```

## Parameters

- `count`: Receives the count of channels in the parameter
- `parameterID`: The ID of the parameter whose channels you want to count

## Return Value

Return Value Returns the number of channels in a parameter (sliders = 1, 2D points = 2, RGBA colors = 4, etc.) in the count parameter. If any errors occur, the return value will be a non-nil pointer to an NSError containing information about the error.

## See Also

### Instance Methods

- [add(_:toParameter:andChannel:)](professional_video_applications/fxkeyframeapi_v3/add(_:toparameter:andchannel:).md)
- [keyframe(_:atOrAfter:fromParameter:andChannel:)](professional_video_applications/fxkeyframeapi_v3/keyframe(_:atorafter:fromparameter:andchannel:).md)
- [keyframe(_:atOrBefore:fromParameter:andChannel:)](professional_video_applications/fxkeyframeapi_v3/keyframe(_:atorbefore:fromparameter:andchannel:).md)
- [keyframe(_:forParameter:channel:andIndex:)](professional_video_applications/fxkeyframeapi_v3/keyframe(_:forparameter:channel:andindex:).md)
- [keyframeCount(_:forParameter:andChannel:)](professional_video_applications/fxkeyframeapi_v3/keyframecount(_:forparameter:andchannel:).md)
- [parameter(_:channel:hasKeyframe:at:)](professional_video_applications/fxkeyframeapi_v3/parameter(_:channel:haskeyframe:at:).md)
- [removeAllKeyframes(forParameter:andChannel:)](professional_video_applications/fxkeyframeapi_v3/removeallkeyframes(forparameter:andchannel:).md)
- [removeKeyframe(at:fromParameter:andChannel:)](professional_video_applications/fxkeyframeapi_v3/removekeyframe(at:fromparameter:andchannel:).md)
- [setKeyframeIndex(_:with:forParameter:andChannel:)](professional_video_applications/fxkeyframeapi_v3/setkeyframeindex(_:with:forparameter:andchannel:).md)