---
title: CMSampleBuffer.ContentWithFormatDescription
framework: coremedia
role: symbol
role_heading: Protocol
path: coremedia/cmsamplebuffer/contentwithformatdescription
---

# CMSampleBuffer.ContentWithFormatDescription

This is a marker protocol to indicate content that always has a format description.

## Declaration

```swift
protocol ContentWithFormatDescription : CMSampleBuffer.Content
```

## Relationships

### Inherits From

- [CMSampleBuffer.Content](coremedia/cmsamplebuffer/content.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

### Conforming Types

- [CMReadOnlyDataBlockBuffer](coremedia/cmreadonlydatablockbuffer.md)
- [CMSampleDataReference](coremedia/cmsampledatareference.md)