<!--
{
  "availability" : [
    "iOS: 18.0.0 -",
    "iPadOS: 18.0.0 -",
    "macCatalyst: 15.0.0 -",
    "macOS: 12.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AVFoundation",
  "identifier" : "/documentation/AVFoundation/AVCaptionConversionWarning",
  "metadataVersion" : "0.1.0",
  "role" : "Class",
  "symbol" : {
    "kind" : "Class",
    "modules" : [
      "AVFoundation"
    ],
    "preciseIdentifier" : "c:objc(cs)AVCaptionConversionWarning"
  },
  "title" : "AVCaptionConversionWarning"
}
-->

# AVCaptionConversionWarning

An object that represents a conversion warning produced by a validator.

```
class AVCaptionConversionWarning
```

## Topics

### Inspecting the warning

[`warningType`](/documentation/AVFoundation/AVCaptionConversionWarning/warningType-swift.property)

A type that indicates the nature of the validation warning.

[`rangeOfCaptions`](/documentation/AVFoundation/AVCaptionConversionWarning/rangeOfCaptions)

The range of the captions for which the system issued a warning.

[`adjustment`](/documentation/AVFoundation/AVCaptionConversionWarning/adjustment)

A correction the converter makes when it converts a caption to a specific format.

[`AVCaptionConversionAdjustment`](/documentation/AVFoundation/AVCaptionConversionAdjustment)

An object that describes an adjustment to correct a problem found during validation of a caption conversion.

[`AVCaptionConversionWarning.WarningType`](/documentation/AVFoundation/AVCaptionConversionWarning/WarningType-swift.struct)

The type of a caption conversion warning.



---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)