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

# init(unsafeMarkerOnlySampleBuffer:)

Create a ready sample buffer with marker content from an existing sample buffer.

## Declaration

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

## Discussion

Discussion Marker sample buffers have no content and no format description.