---
title: supportedRevisions
framework: videotoolbox
role: symbol
role_heading: Type Property
path: videotoolbox/vtframerateconversionconfiguration/supportedrevisions
---

# supportedRevisions

The collection of currently-supported algorithms or configuration revisions for the class of configurations.

## Declaration

```swift
class var supportedRevisions: IndexSet { get }
```

## Discussion

Discussion Use this property to determine the supported revisions for each configuration at runtime.

## See Also

### Inspecting revision information

- [revision](videotoolbox/vtframerateconversionconfiguration/revision-swift.property.md)
- [defaultRevision](videotoolbox/vtframerateconversionconfiguration/defaultrevision.md)
- [VTFrameRateConversionConfiguration.Revision](videotoolbox/vtframerateconversionconfiguration/revision-swift.enum.md)