---
title: rateScalar
framework: corevideo
role: symbol
role_heading: Instance Property
path: corevideo/cvtimestamp/ratescalar
---

# rateScalar

The current rate of the device as measured by the timestamps, divided by the nominal rate.

## Declaration

```swift
var rateScalar: Double
```

## See Also

### Properties

- [flags](corevideo/cvtimestamp/flags.md)
- [hostTime](corevideo/cvtimestamp/hosttime.md)
- [reserved](corevideo/cvtimestamp/reserved.md)
- [smpteTime](corevideo/cvtimestamp/smptetime.md)
- [version](corevideo/cvtimestamp/version.md)
- [videoRefreshPeriod](corevideo/cvtimestamp/videorefreshperiod.md)
- [videoTime](corevideo/cvtimestamp/videotime.md)
- [videoTimeScale](corevideo/cvtimestamp/videotimescale.md)