---
title: maxFrameDuration
framework: coremediaio
role: symbol
role_heading: Instance Property
path: coremediaio/cmioextensionstreamproperties/maxframeduration-5qqg
---

# maxFrameDuration

The maximum duration of a frame.

## Declaration

```swift
@nonobjc var maxFrameDuration: CMTime? { get set }
```

## See Also

### Configuring Source Properties

- [activeFormatIndex](coremediaio/cmioextensionstreamproperties/activeformatindex-83u7z.md)
- [frameDuration](coremediaio/cmioextensionstreamproperties/frameduration-4rnl9.md)