---
title: "CVBufferRemoveAttachment(_:_:)"
framework: corevideo
role: symbol
role_heading: Function
path: "corevideo/cvbufferremoveattachment(_:_:)"
---

# CVBufferRemoveAttachment(_:_:)

Removes the attachment you specify from a Core Video buffer.

## Declaration

```swift
func CVBufferRemoveAttachment(_ buffer: CVBuffer, _ key: CFString)
```

## Parameters

- `buffer`: The buffer containing the attachment to remove.
- `key`: A string that identifies the attachment, which can be of any doc://com.apple.documentation/documentation/CoreFoundation/CFTypeRef. See doc://com.apple.corevideo/documentation/CoreVideo/cvbuffer-attachment-keys and doc://com.apple.corevideo/documentation/CoreVideo/image-buffer-attachment-keys for predefined values.

## Discussion

Discussion If the attachment exists in the buffer, the system removes it and decrements the retain count.

## See Also

### Working with attachments

- [CVBufferHasAttachment(_:_:)](corevideo/cvbufferhasattachment(_:_:).md)
- [CVBufferCopyAttachment(_:_:_:)](corevideo/cvbuffercopyattachment(_:_:_:).md)
- [CVBufferCopyAttachments(_:_:)](corevideo/cvbuffercopyattachments(_:_:).md)
- [CVBufferSetAttachment(_:_:_:_:)](corevideo/cvbuffersetattachment(_:_:_:_:).md)
- [CVBufferSetAttachments(_:_:_:)](corevideo/cvbuffersetattachments(_:_:_:).md)
- [CVBufferPropagateAttachments(_:_:)](corevideo/cvbufferpropagateattachments(_:_:).md)
- [CVBufferRemoveAllAttachments(_:)](corevideo/cvbufferremoveallattachments(_:).md)
- [CVBufferGetAttachment(_:_:_:)](corevideo/cvbuffergetattachment(_:_:_:).md)
- [CVBufferGetAttachments(_:_:)](corevideo/cvbuffergetattachments(_:_:).md)