---
title: kVTDecompressionPropertyKey_RequestRAWOutput
framework: videotoolbox
role: symbol
role_heading: Global Variable
path: videotoolbox/kvtdecompressionpropertykey_requestrawoutput
---

# kVTDecompressionPropertyKey_RequestRAWOutput

For decoders that produce RAW output, this property requests that the decompression session provides unprocessed output.

## Declaration

```swift
let kVTDecompressionPropertyKey_RequestRAWOutput: CFString
```

## Discussion

Discussion When a decoder produces RAW output the VTDecompressionSession automatically invokes a VTRAWProcessingSession with default settings and emits processed frames by default, or when kVTDecompressionPropertyKey_RequestRAWOutput is set to kCFBooleanFalse. If you want to run a VTRAWProcessingSession on the RAW output to control the post-decode processing of the decoded CVPixelBuffer objects, you must set kVTDecompressionPropertyKey_RequestRAWOutput to kCFBooleanTrue. If kVTDecompressionPropertyKey_RequestRAWOutput is enabled and the decoder produces RAW output, the VTDecompressionSession returns CVPixelBuffer objects in the decoder’s native RAW format, and ignores any specified image buffer attributes.

## See Also

### Post-Decompression Processing

- [kVTDecompressionPropertyKey_DecoderProducesRAWOutput](videotoolbox/kvtdecompressionpropertykey_decoderproducesrawoutput.md)
- [kVTDecompressionPropertyKey_GeneratePerFrameHDRDisplayMetadata](videotoolbox/kvtdecompressionpropertykey_generateperframehdrdisplaymetadata.md)
- [kVTDecompressionPropertyKey_PixelTransferProperties](videotoolbox/kvtdecompressionpropertykey_pixeltransferproperties.md)
- [kVTDecompressionPropertyKey_PropagatePerFrameHDRDisplayMetadata](videotoolbox/kvtdecompressionpropertykey_propagateperframehdrdisplaymetadata.md)
- [kVTDecompressionPropertyKey_UsingGPURegistryID](videotoolbox/kvtdecompressionpropertykey_usinggpuregistryid.md)
- [kVTVideoDecoderSpecification_PreferredDecoderGPURegistryID](videotoolbox/kvtvideodecoderspecification_preferreddecodergpuregistryid.md)
- [kVTVideoDecoderSpecification_RequiredDecoderGPURegistryID](videotoolbox/kvtvideodecoderspecification_requireddecodergpuregistryid.md)