---
title: AVAssetDownloadTaskPrefersLosslessAudioKey
framework: avfoundation
role: symbol
role_heading: Global Variable
path: avfoundation/avassetdownloadtaskpreferslosslessaudiokey
---

# AVAssetDownloadTaskPrefersLosslessAudioKey

A key that indicates whether the task downloads media selections in lossless audio format, when available.

## Declaration

```swift
let AVAssetDownloadTaskPrefersLosslessAudioKey: String
```

## Discussion

Discussion By default, a download task prefers downloading lossy audio formats. Provide a Boolean value of true to change this behavior.

## See Also

### Download option keys

- [AVAssetDownloadTaskMinimumRequiredMediaBitrateKey](avfoundation/avassetdownloadtaskminimumrequiredmediabitratekey.md)
- [AVAssetDownloadTaskMinimumRequiredPresentationSizeKey](avfoundation/avassetdownloadtaskminimumrequiredpresentationsizekey.md)
- [AVAssetDownloadTaskMediaSelectionKey](avfoundation/avassetdownloadtaskmediaselectionkey.md)
- [AVAssetDownloadTaskMediaSelectionPrefersMultichannelKey](avfoundation/avassetdownloadtaskmediaselectionprefersmultichannelkey.md)
- [AVAssetDownloadTaskPrefersHDRKey](avfoundation/avassetdownloadtaskprefershdrkey.md)