---
title: kVTCompressionPropertyKey_PixelTransferProperties
framework: videotoolbox
role: symbol
role_heading: Global Variable
path: videotoolbox/kvtcompressionpropertykey_pixeltransferproperties
---

# kVTCompressionPropertyKey_PixelTransferProperties

Properties for configuring a pixel transfer session.

## Declaration

```swift
let kVTCompressionPropertyKey_PixelTransferProperties: CFString
```

## Discussion

Discussion The properties for configuring a VTPixelTransferSession to transfer source frames from the client’s image buffers to the video encoder’s image buffers, if necessary. Discussion The value is a CFDictionary of properties to configure a VTPixelTransferSession. Setting this property alone does not necessarily guarantee that a VTPixelTransferSession will be created.