---
title: reverse
framework: coremedia
role: symbol
role_heading: Type Property
path: coremedia/cmsamplebufferattachmentkeydefinitions/reverse
---

# reverse

Indicates that the decoded contents of the sample buffer should be reversed.

## Declaration

```swift
static let reverse: CVAttachmentKeyDefinitionWithDefault<CMSampleBufferAttachmentKeyDefinitions.ShouldPropagate, Bool>
```

## Discussion

Discussion If this attachment is not present, the sample buffer should be played forwards as usual. Reversal occurs after trimming and speed multipliers. The getter returns the default value of false if this attachment is not present.