---
title: naturalTimeScale
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avmutablemovietrack/naturaltimescale
---

# naturalTimeScale

The natural time scale of the media that a track references.

## Declaration

```swift
var naturalTimeScale: CMTimeScale { get }
```

## See Also

### Accessing temporal information

- [timeRange](avfoundation/avmutablemovietrack/timerange.md)
- [timescale](avfoundation/avmutablemovietrack/timescale.md)
- [estimatedDataRate](avfoundation/avmutablemovietrack/estimateddatarate.md)
- [samplePresentationTime(forTrackTime:)](avfoundation/avmutablemovietrack/samplepresentationtime(fortracktime:).md)