# PreviewOutput_Callbacks
<!--Kit: Camera Kit-->
<!--Subsystem: Multimedia-->
<!--Owner: @qano-->
<!--SE: @leo_ysl-->
<!--TSE: @xchaosioda-->

## Overview

The struct describes the callbacks related to preview output.

**Since**: 11

**Related module**: [OH_Camera](capi-oh-camera.md)

**Header file**: [preview_output.h](capi-preview-output-h.md)

## Summary

### Member Variables

| Name| Description|
| -- | -- |
| [OH_PreviewOutput_OnFrameStart](capi-preview-output-h.md#oh_previewoutput_onframestart) onFrameStart | Callback to report preview output frame start events.|
| [OH_PreviewOutput_OnFrameEnd](capi-preview-output-h.md#oh_previewoutput_onframeend) onFrameEnd | Callback to report preview output frame end events.|
| [OH_PreviewOutput_OnError](capi-preview-output-h.md#oh_previewoutput_onerror) onError | Callback to report preview output errors.|