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# processWithParameters:error:

Synchronously performs the configured video effect.

```
- (BOOL) processWithParameters:(id<VTFrameProcessorParameters>) parameters error:(NSError **) error;
```

## Parameters

`parameters`

Frame processing parameters to specify additional frame based parameters to be used during processing. The parameters need to match the configuration type used during start session.

## Discussion

Frame level settings and frame level input/output parameters are passed by using the respective [`VTFrameProcessorParameters`](/documentation/VideoToolbox/VTFrameProcessorParameters) for the effect that the frame processor is configured for.

---

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