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# shouldRenderAtPlaybackTime

Specifies whether processing should occur during or before playback.

```
static let shouldRenderAtPlaybackTime: PHLivePhotoEditingOption
```

## Discussion

The value for this key is an NSNumber object with a Boolean value. With the default value of `false`, Photos always renders your edits immediately when you call the [`init(livePhotoEditingInput:)`](/documentation/Photos/PHLivePhotoEditingContext/init(livePhotoEditingInput:)) method, calling your [`frameProcessor`](/documentation/Photos/PHLivePhotoEditingContext/frameProcessor) block for each frame in the Live Photo’s video and still photo content.

When you specify a value of `true`, Photos can defer rendering until playback time, calling your [`frameProcessor`](/documentation/Photos/PHLivePhotoEditingContext/frameProcessor) block only for photo and video frames that need to be displayed. However, in this case Photos may still choose to pre-render your edits if needed.

This option does not apply when rendering for output with the [`saveLivePhoto(to:options:completionHandler:)`](/documentation/Photos/PHLivePhotoEditingContext/saveLivePhoto(to:options:completionHandler:)) method.

---

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