---
title: contentLightLevelInfo
framework: corevideo
role: symbol
role_heading: Type Property
path: corevideo/cvimagebufferattachmentkeydefinitions/contentlightlevelinfo
---

# contentLightLevelInfo

The content light level information for the image.

## Declaration

```swift
static var contentLightLevelInfo: CVAttachmentKeyDefinition<Self.ShouldPropagate, Data> { get }
```

## Discussion

Discussion The value for this key is a 4 byte big-endian data sequence to match the payload of the content light level information metadata in the supplemental enhancement information (SEI) message.