---
title: AVAssetReaderCaptionValidationHandling
framework: avfoundation
role: symbol
role_heading: Protocol
path: avfoundation/avassetreadercaptionvalidationhandling
---

# AVAssetReaderCaptionValidationHandling

A protocol that defines the methods for caption validation events.

## Declaration

```swift
protocol AVAssetReaderCaptionValidationHandling : NSObjectProtocol
```

## Topics

### Validating captions

- [captionAdaptor(_:didVendCaption:skippingUnsupportedSourceSyntaxElements:)](avfoundation/avassetreadercaptionvalidationhandling/captionadaptor(_:didvendcaption:skippingunsupportedsourcesyntaxelements:).md)

## Relationships

### Inherits From

- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Managing the validation delegate

- [validationDelegate](avfoundation/avassetreaderoutputcaptionadaptor/validationdelegate.md)