---
title: AVVideoFieldMode.topOnly
framework: avfoundation
role: symbol
role_heading: Case
path: avfoundation/avvideofieldmode/toponly
---

# AVVideoFieldMode.topOnly

A value that indicates that a video connection only passes the top video field.

## Declaration

```swift
case topOnly
```

## See Also

### Constants

- [AVVideoFieldMode.both](avfoundation/avvideofieldmode/both.md)
- [AVVideoFieldMode.bottomOnly](avfoundation/avvideofieldmode/bottomonly.md)
- [AVVideoFieldMode.deinterlace](avfoundation/avvideofieldmode/deinterlace.md)