---
title: "CMTimebaseGetRate(_:)"
framework: coremedia
role: symbol
role_heading: Function
path: "coremedia/cmtimebasegetrate(_:)"
---

# CMTimebaseGetRate(_:)

Returns the current rate of a timebase.

## Declaration

```swift
func CMTimebaseGetRate(_ timebase: CMTimebase) -> Float64
```

## Discussion

Discussion This is the rate relative to its immediate host clock or timebase. For example, if a timebase is running at twice the rate of its host, its rate is 2.0.

## See Also

### Getting and Setting the Time Rate

- [CMTimebaseGetEffectiveRate(_:)](coremedia/cmtimebasegeteffectiverate(_:).md)
- [CMTimebaseSetRate(_:rate:)](coremedia/cmtimebasesetrate(_:rate:).md)
- [CMTimebaseSetRateAndAnchorTime(_:rate:anchorTime:immediateSourceTime:)](coremedia/cmtimebasesetrateandanchortime(_:rate:anchortime:immediatesourcetime:).md)