---
title: VTMotionEstimationSession
framework: Video Toolbox
role: symbol
role_heading: Class
platforms: [iOS 26.0+, iPadOS 26.0+, Mac Catalyst 26.0+, macOS 26.0+, tvOS 26.0+, visionOS 26.0+]
path: videotoolbox/vtmotionestimationsession
---

# VTMotionEstimationSession

## Declaration

```swift
final class VTMotionEstimationSession
```

## Topics

### Creating a motion estimation session

- [init(width:height:motionVectorSize:useMultiPassSearch:label:)](videotoolbox/vtmotionestimationsession/init(width:height:motionvectorsize:usemultipasssearch:label:).md)

### Estimating motion

- [motion(of:comparedTo:flags:)](videotoolbox/vtmotionestimationsession/motion(of:comparedto:flags:).md)
- [VTMotionEstimationSession.FrameFlags](videotoolbox/vtmotionestimationsession/frameflags.md)

### Inspecting the session

- [label](videotoolbox/vtmotionestimationsession/label.md)
- [motionVectorSize](videotoolbox/vtmotionestimationsession/motionvectorsize.md)
- [sourcePixelBufferAttributes](videotoolbox/vtmotionestimationsession/sourcepixelbufferattributes.md)
- [useMultiPassSearch](videotoolbox/vtmotionestimationsession/usemultipasssearch.md)

### Inspecting the motion result

- [VTMotionEstimationSession.Motion](videotoolbox/vtmotionestimationsession/motion.md)
- [VTMotionEstimationSession.BlockSize](videotoolbox/vtmotionestimationsession/blocksize.md)

## Relationships

### Conforms To

- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)