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# CMSampleBuffer.NotificationKey

A key for sample buffer notifications.

```
struct NotificationKey
```

## Topics

### Keys

[`static let status: CMSampleBuffer.NotificationKey`](/documentation/CoreMedia/CMSampleBuffer/NotificationKey/status)

A key to retrieve a status value.

## Relationships

### Conforms To

[`Hashable`](/documentation/Swift/Hashable)

[`Sendable`](/documentation/Swift/Sendable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Equatable`](/documentation/Swift/Equatable)

---

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