---
title: sourcePixelBufferAttributes
framework: videotoolbox
role: symbol
role_heading: Instance Property
path: videotoolbox/vtopticalflowconfiguration/sourcepixelbufferattributes
---

# sourcePixelBufferAttributes

A dictionary of pixel buffer attributes describing requirements for pixel buffers used as source frames and reference frames.

## Declaration

```swift
var sourcePixelBufferAttributes: [String : any Sendable] { get }
```

## See Also

### Inspecting the configuration

- [frameWidth](videotoolbox/vtopticalflowconfiguration/framewidth.md)
- [frameHeight](videotoolbox/vtopticalflowconfiguration/frameheight.md)
- [destinationPixelBufferAttributes](videotoolbox/vtopticalflowconfiguration/destinationpixelbufferattributes.md)
- [supportedPixelFormats](videotoolbox/vtopticalflowconfiguration/supportedpixelformats.md)
- [qualityPrioritization](videotoolbox/vtopticalflowconfiguration/qualityprioritization-swift.property.md)
- [VTOpticalFlowConfiguration.QualityPrioritization](videotoolbox/vtopticalflowconfiguration/qualityprioritization-swift.enum.md)