---
title: validFrameDurations
framework: coremediaio
role: symbol
role_heading: Instance Property
path: coremediaio/cmioextensionstreamformat/validframedurations-707st
---

# validFrameDurations

An array of frame durations the stream supports.

## Declaration

```swift
@nonobjc var validFrameDurations: [CMTime]? { get }
```

## See Also

### Configuring Frame Durations

- [minFrameDuration](coremediaio/cmioextensionstreamformat/minframeduration.md)
- [maxFrameDuration](coremediaio/cmioextensionstreamformat/maxframeduration.md)