---
title: kCMTimeScaleKey
framework: coremedia
role: symbol
role_heading: Global Variable
path: coremedia/kcmtimescalekey
---

# kCMTimeScaleKey

A dictionary key for a timescale.

## Declaration

```swift
let kCMTimeScaleKey: CFString
```

## See Also

### Constants

- [kCMTimeValueKey](coremedia/kcmtimevaluekey.md)
- [kCMTimeEpochKey](coremedia/kcmtimeepochkey.md)
- [kCMTimeFlagsKey](coremedia/kcmtimeflagskey.md)