---
title: "init(unsafeSampleDataReferenceBuffer:)"
framework: coremedia
role: symbol
role_heading: Initializer
path: "coremedia/cmreadysamplebuffer/init(unsafesampledatareferencebuffer:)"
---

# init(unsafeSampleDataReferenceBuffer:)

Create a ready sample buffer with data reference content from an existing sample buffer.

## Declaration

```swift
init(unsafeSampleDataReferenceBuffer unsafeBuffer: sending CMSampleBuffer)
```