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# FxFieldOrder

Constants used to identify the field order of an image stream.

```
typealias FxFieldOrder = Int
```

## Topics

### Constants

[`var kFxFieldOrder_PROGRESSIVE: Int`](/documentation/professional_video_applications/kFxFieldOrder_PROGRESSIVE)

Full frame, progressive (no fields).

[`var kFxFieldOrder_UPPER_FIRST: Int`](/documentation/professional_video_applications/kFxFieldOrder_UPPER_FIRST)

Upper field first.

[`var kFxFieldOrder_LOWER_FIRST: Int`](/documentation/professional_video_applications/kFxFieldOrder_LOWER_FIRST)

Lower field first.


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