---
title: "setAnchorTime(_:referenceTime:)"
framework: coremedia
role: symbol
role_heading: Instance Method
path: "coremedia/cmtimebase/setanchortime(_:referencetime:)"
---

# setAnchorTime(_:referenceTime:)

Sets the time at a particular source time.

## Declaration

```swift
func setAnchorTime(_ anchorTime: CMTime, referenceTime: CMTime) throws
```