---
title: VTCopyRAWProcessorExtensionProperties
framework: Video Toolbox
role: symbol
role_heading: Function
platforms: [macOS 15.0+]
path: videotoolbox/vtcopyrawprocessorextensionproperties
---

# VTCopyRAWProcessorExtensionProperties

Returns information about the Media Extension RAW processor supporting the specified format.

## Declaration

```occ
extern OSStatus VTCopyRAWProcessorExtensionProperties(CMFormatDescriptionRef formatDesc, CFDictionaryRef*mediaExtensionPropertiesOut);
```

## Parameters

- `formatDesc`: The format description for the video format for which information is being requested.
- `mediaExtensionPropertiesOut`: If a Media Extension RAW processor will be used to process the specified format, this pointer will return a dictionary with a set of properties describing the extension RAW processor. The dictionary keys doc://com.apple.videotoolbox/documentation/VideoToolbox/VTExtensionPropertiesKey values.

## Return Value

Return Value If the function succeeds and a Media Extension RAW processor will be used to process this format, the return value will be noErr. If the function succeeds but a Media Extension RAW processor will not be used to process this format, the return value will be kVTCouldNotFindExtensionErr. Otherwise, the return value will be an error code describing the failure.

## Discussion

Discussion If a Media Extension RAW processor will be used to process the specified format, this function will return information about the Media Extension that will be used.

## See Also

### Configuring a session

- [VTRAWProcessingSessionCopyProcessingParameters](videotoolbox/vtrawprocessingsessioncopyprocessingparameters.md)
- [VTRAWProcessingSessionSetProcessingParameters](videotoolbox/vtrawprocessingsessionsetprocessingparameters.md)
- [VTRAWProcessingSessionSetParameterChangedHandler](videotoolbox/vtrawprocessingsessionsetparameterchangedhandler.md)
- [RAW processing parameters](videotoolbox/raw-processing-parameters.md)
- [RAW Processing Properties](videotoolbox/raw-processing-properties.md)