---
title: minimumDuration
framework: avfoundation
role: symbol
role_heading: Instance Property
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: avfoundation/avassetwritingplanner/segmentboundaryguidelines/minimumduration
---

# minimumDuration

The minimum duration of each incremental segment. kCMTimeZero means there is no minimum segment duration requirement. kCMTimePositiveInfinity means that incremental segmentation is not supported for this codecType.

## Declaration

```swift
var minimumDuration: CMTime
```