---
title: duration
framework: quartzcore
role: symbol
role_heading: Instance Property
path: quartzcore/camediatiming/duration
---

# duration

Specifies the basic duration of the animation, in seconds.

## Declaration

```swift
var duration: CFTimeInterval { get set }
```

## Discussion

Discussion Defaults to 0.

## See Also

### Duration and Speed

- [speed](quartzcore/camediatiming/speed.md)