---
title: maxDuration
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avassetexportsession/maxduration
---

# maxDuration

Provides an estimate of the maximum duration of the exported media.

## Declaration

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

## See Also

### Estimating duration

- [estimateMaximumDuration(completionHandler:)](avfoundation/avassetexportsession/estimatemaximumduration(completionhandler:).md)