---
title: AVCoreAnimationBeginTimeAtZero
framework: avfoundation
role: symbol
role_heading: Global Variable
path: avfoundation/avcoreanimationbegintimeatzero
---

# AVCoreAnimationBeginTimeAtZero

A value that sets an animation begin time to 0.

## Declaration

```swift
let AVCoreAnimationBeginTimeAtZero: CFTimeInterval
```

## Discussion

Discussion The constant is a small, non-zero, positive value which prevents CoreAnimation from replacing 0.0 with CACurrentMediaTime().