---
title: VNDetectTrajectoriesRequestRevision1
framework: vision
role: symbol
role_heading: Global Variable
path: vision/vndetecttrajectoriesrequestrevision1
---

# VNDetectTrajectoriesRequestRevision1

A constant for specifying revision 1 of the trajectories detection request.

## Declaration

```swift
var VNDetectTrajectoriesRequestRevision1: Int { get }
```