---
title: kVTCompressionPropertyKey_PreserveDynamicHDRMetadata
framework: videotoolbox
role: symbol
role_heading: Global Variable
path: videotoolbox/kvtcompressionpropertykey_preservedynamichdrmetadata
---

# kVTCompressionPropertyKey_PreserveDynamicHDRMetadata

Specifies whether to preserve dynamic HDR metadata on the input pixel buffer.

## Declaration

```swift
let kVTCompressionPropertyKey_PreserveDynamicHDRMetadata: CFString
```

## See Also

### Bitstream Configuration

- [kVTCompressionPropertyKey_Depth](videotoolbox/kvtcompressionpropertykey_depth.md)
- [kVTCompressionPropertyKey_H264EntropyMode](videotoolbox/kvtcompressionpropertykey_h264entropymode.md)
- [kVTCompressionPropertyKey_HDRMetadataInsertionMode](videotoolbox/kvtcompressionpropertykey_hdrmetadatainsertionmode.md)
- [kVTCompressionPropertyKey_OutputBitDepth](videotoolbox/kvtcompressionpropertykey_outputbitdepth.md)
- [kVTCompressionPropertyKey_PreserveAlphaChannel](videotoolbox/kvtcompressionpropertykey_preservealphachannel.md)
- [kVTCompressionPropertyKey_ProfileLevel](videotoolbox/kvtcompressionpropertykey_profilelevel.md)