---
title: CMSampleBufferInvalidateHandler
framework: coremedia
role: symbol
role_heading: Type Alias
path: coremedia/cmsamplebufferinvalidatehandler
---

# CMSampleBufferInvalidateHandler

Client callback called by CMSampleBufferInvalidate(_:).

## Declaration

```swift
typealias CMSampleBufferInvalidateHandler = (CMSampleBuffer) -> Void
```

## Parameters

- `sbuf`: The CMSampleBuffer being invalidated.