---
title: CVImageFieldDetail.spatialFirstLineEarly
framework: corevideo
role: symbol
role_heading: Case
path: corevideo/cvimagefielddetail/spatialfirstlineearly
---

# CVImageFieldDetail.spatialFirstLineEarly

The image buffer contains interleaved fields. The first line of image data corresponds to the first top, odd-numbered, field.

## Declaration

```swift
case spatialFirstLineEarly
```