| type | string | Yes | Type of event to subscribe to. The value **periodReach** means the period reached event, which is triggered when the period of frame capturing reaches the value of the **frame** parameter.|
| type | string | Yes | Type of event to subscribe to. The value **periodReach** means the period reached event, which is triggered when the period of frame capturing reaches the value of the **frame** parameter.|
| frame | number | Yes | Period during which frame rendering is listened. The value must be greater than **0**. |
| frame | number | Yes | Period during which frame capturing is listened. The value must be greater than **0**. |
| callback | (position: number) => {} | Yes | Callback invoked when the event is triggered. |
| callback | (position: number) => {} | Yes | Callback invoked when the event is triggered. |