---
title: isValid
framework: coremedia
role: symbol
role_heading: Instance Property
path: coremedia/cmtimerange/isvalid
---

# isValid

A Boolean value that indicates whether the time range is valid.

## Declaration

```swift
var isValid: Bool { get }
```

## See Also

### Inspecting Time Ranges

- [start](coremedia/cmtimerange/start.md)
- [end](coremedia/cmtimerange/end.md)
- [duration](coremedia/cmtimerange/duration.md)
- [isEmpty](coremedia/cmtimerange/isempty.md)
- [isIndefinite](coremedia/cmtimerange/isindefinite.md)