---
title: extensionName
framework: videotoolbox
role: symbol
role_heading: Type Property
path: videotoolbox/vtextensionpropertieskey/extensionname
---

# extensionName

A dictionary key for the localized extension name.

## Declaration

```swift
static let extensionName: VTExtensionPropertiesKey
```

## Discussion

Discussion This key points to a CFStringRef value with the localized extension name.

## See Also

### Keys

- [containingBundleName](videotoolbox/vtextensionpropertieskey/containingbundlename.md)
- [containingBundleURL](videotoolbox/vtextensionpropertieskey/containingbundleurl.md)
- [extensionIdentifier](videotoolbox/vtextensionpropertieskey/extensionidentifier.md)
- [extensionURL](videotoolbox/vtextensionpropertieskey/extensionurl.md)