---
title: "setCinematicVideoTrackingFocus(detectedObjectID:focusMode:)"
framework: avfoundation
role: symbol
role_heading: Instance Method
path: "avfoundation/avcapturedevice/setcinematicvideotrackingfocus(detectedobjectid:focusmode:)"
---

# setCinematicVideoTrackingFocus(detectedObjectID:focusMode:)

Focus on and start tracking a detected object.

## Declaration

```swift
func setCinematicVideoTrackingFocus(detectedObjectID: Int, focusMode: AVCaptureDevice.CinematicVideoFocusMode)
```

## Parameters

- `detectedObjectID`: The ID of the detected object.
- `focusMode`: Specify whether to focus strongly or weakly.

## See Also

### Configuring Cinematic video

- [setCinematicVideoFixedFocus(at:focusMode:)](avfoundation/avcapturedevice/setcinematicvideofixedfocus(at:focusmode:).md)
- [setCinematicVideoTrackingFocus(at:focusMode:)](avfoundation/avcapturedevice/setcinematicvideotrackingfocus(at:focusmode:).md)
- [AVCaptureDevice.CinematicVideoFocusMode](avfoundation/avcapturedevice/cinematicvideofocusmode.md)
- [AVCaptureSceneMonitoringStatus](avfoundation/avcapturescenemonitoringstatus.md)
- [notEnoughLight](avfoundation/avcapturescenemonitoringstatus/notenoughlight.md)
- [cinematicVideoCaptureSceneMonitoringStatuses](avfoundation/avcapturedevice/cinematicvideocapturescenemonitoringstatuses.md)