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# AVVideoCompositionRenderHint

Information about upcoming composition requests, such as composition start time and end time.

```
class AVVideoCompositionRenderHint
```

## Topics

### Managing composition timing

[`startCompositionTime`](/documentation/AVFoundation/AVVideoCompositionRenderHint/startCompositionTime)

The start time of the upcoming composition requests.

[`endCompositionTime`](/documentation/AVFoundation/AVVideoCompositionRenderHint/endCompositionTime)

The end time of the upcoming composition requests.


---

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