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

# droppedFrameReasonInfo

Indicates additional information regarding the dropped video frame.

## Declaration

```swift
static let droppedFrameReasonInfo: CVAttachmentKeyDefinition<CMSampleBufferAttachmentKeyDefinitions.ShouldPropagate, CMDroppedFrameReason.Info>
```

## Discussion

Discussion Sample buffers with this attachment contain no image or data buffer. They mark a dropped video frame. If present, this attachment provides additional information about the reason described by the droppedFrameReason key.