---
title: CMTimeScale
framework: coremedia
role: symbol
role_heading: Type Alias
path: coremedia/cmtimescale
---

# CMTimeScale

An integer timescale.

## Declaration

```swift
typealias CMTimeScale = Int32
```

## Discussion

Discussion Timescales must be positive.

## See Also

### Data Types

- [CMTime](coremedia/cmtime.md)
- [CMTimeValue](coremedia/cmtimevalue.md)
- [CMTimeEpoch](coremedia/cmtimeepoch.md)
- [CMTimeFlags](coremedia/cmtimeflags.md)