---
title: timebase
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avsamplebufferdisplaylayer/timebase
---

# timebase

The renderer’s timebase, which determines how the layer interprets time stamps.

## Declaration

```swift
var timebase: CMTimebase { get }
```

## Discussion

Discussion Apple discourages the use of this symbol in iOS 17, tvOS 17, and macOS 14 and later. Use timebase on the sampleBufferRenderer instead.