---
title: "startBackwardAnalysis(_:)"
framework: Professional Video Applications
role: symbol
role_heading: Instance Method
platforms: [fxplug 4.1+]
path: "professional_video_applications/fxanalysisapi/startbackwardanalysis(_:)"
---

# startBackwardAnalysis(_:)

Requests that the application begin a backwards analysis of a clip from end to start.

## Declaration

```swift
func startBackwardAnalysis(_ location: FxAnalysisLocation) throws
```

## Parameters

- `location`: FxAnalysisLocation type to choose to do analysis on either GPU or CPU.

## See Also

### Providing Frame Analysis Information

- [analysisStateForEffect()](professional_video_applications/fxanalysisapi/analysisstateforeffect().md)
- [startForwardAnalysis(_:)](professional_video_applications/fxanalysisapi/startforwardanalysis(_:).md)
- [FxAnalysisLocation](professional_video_applications/fxanalysislocation.md)