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# VTCopyRAWProcessorExtensionProperties

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

```
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 [`VTExtensionPropertiesKey`](/documentation/VideoToolbox/VTExtensionPropertiesKey) values.

## 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`](/documentation/VideoToolbox/kVTCouldNotFindExtensionErr). Otherwise, the return value will be an error code describing the failure.

## 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.

---

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