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

# sourceFrame

Source frame that you provided when creating the low-latency frame interpolation parameters object.

## Declaration

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

## See Also

### Inspecting the parameters

- [previousFrame](videotoolbox/vtlowlatencyframeinterpolationparameters/previousframe.md)
- [interpolationPhase](videotoolbox/vtlowlatencyframeinterpolationparameters/interpolationphase-886vi.md)