---
title: "init(clockName:sourceIdentifier:getTimeCallMinimumInterval:numberOfEventsForRateSmoothing:numberOfAveragesForRateSmoothing:)"
framework: coremediaio
role: symbol
role_heading: Initializer
path: "coremediaio/cmioextensionstreamcustomclockconfiguration/init(clockname:sourceidentifier:gettimecallminimuminterval:numberofeventsforratesmoothing:numberofaveragesforratesmoothing:)"
---

# init(clockName:sourceIdentifier:getTimeCallMinimumInterval:numberOfEventsForRateSmoothing:numberOfAveragesForRateSmoothing:)

Creates a custom clock configuration.

## Declaration

```swift
init(clockName: String, sourceIdentifier: UUID, getTimeCallMinimumInterval: CMTime, numberOfEventsForRateSmoothing: UInt32, numberOfAveragesForRateSmoothing: UInt32)
```

## Parameters

- `clockName`: The name of the clock.
- `sourceIdentifier`: A universally unique identifier for the clock.
- `getTimeCallMinimumInterval`: A minimum call time interval for the clock. If you query the clock for its current time more often than this interval, it returns an interpolated value.
- `numberOfEventsForRateSmoothing`: The number of events to use for rate smoothing. This value must be greater than 0.
- `numberOfAveragesForRateSmoothing`: The number of averages to use for rate smoothing. Specify 0, to use the default smoothing algorithm.