---
title: compositionTime
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avasynchronousciimagefilteringrequest/compositiontime
---

# compositionTime

The time in the video composition corresponding to the frame being processed.

## Declaration

```swift
var compositionTime: CMTime { get }
```

## Discussion

Discussion You can use this property to vary the parameters of a filter over time.

## See Also

### Getting contextual information for filtering

- [renderSize](avfoundation/avasynchronousciimagefilteringrequest/rendersize.md)