---
title: sourceFrame
framework: videotoolbox
role: symbol
role_heading: Instance Property
path: videotoolbox/vtframeprocessorparameters/sourceframe
---

# sourceFrame

A processor frame that contains the current source frame to use for all processing features.

## Declaration

```swift
var sourceFrame: VTFrameProcessorFrame { get }
```

## Discussion

Discussion This property must not be NULL.

## See Also

### Inspecting the parameters

- [destinationFrame](videotoolbox/vtframeprocessorparameters/destinationframe-5suam.md)
- [destinationFrames](videotoolbox/vtframeprocessorparameters/destinationframes-46ken.md)