---
title: hasRedundantCoding
framework: coremedia
role: symbol
role_heading: Instance Property
path: coremedia/cmsamplebuffer/sampleattachments-swift.struct/hasredundantcoding
---

# hasRedundantCoding

Indicates whether the sample has redundant coding.

## Declaration

```swift
var hasRedundantCoding: Bool? { get set }
```

## Discussion

Discussion This key has no default value. If this key is not present, redundant coding information for the sample is unknown.