---
title: temporalTopFirst
framework: coremedia
role: symbol
role_heading: Type Property
path: coremedia/cmformatdescription/extensions-swift.struct/value/fielddetail/temporaltopfirst
---

# temporalTopFirst

## Declaration

```swift
static let temporalTopFirst: CMFormatDescription.Extensions.Value.FieldDetail
```

## See Also

### Field Details

- [spatialFirstLineEarly](coremedia/cmformatdescription/extensions-swift.struct/value/fielddetail/spatialfirstlineearly.md)
- [spatialFirstLineLate](coremedia/cmformatdescription/extensions-swift.struct/value/fielddetail/spatialfirstlinelate.md)
- [temporalBottomFirst](coremedia/cmformatdescription/extensions-swift.struct/value/fielddetail/temporalbottomfirst.md)