---
title: maxFrameDuration
framework: coremediaio
role: symbol
role_heading: Instance Property
path: coremediaio/cmioextensionstreamformat/maxframeduration
---

# maxFrameDuration

The maximum duration a stream supports.

## Declaration

```swift
var maxFrameDuration: CMTime { get }
```

## See Also

### Configuring Frame Durations

- [minFrameDuration](coremediaio/cmioextensionstreamformat/minframeduration.md)
- [validFrameDurations](coremediaio/cmioextensionstreamformat/validframedurations-707st.md)