| crop | <code>optional</code> | [BoundingBox](./puppeteer.boundingbox.md) | Specifies the region of the viewport to crop. | |
| ffmpegPath | <code>optional</code> | string | <p>Path to the \[ffmpeg\](https://ffmpeg.org/).</p><p>Required if <code>ffmpeg</code> is not in your PATH.</p> | |
| scale | <code>optional</code> | number | <p>Scales the output video.</p><p>For example, <code>0.5</code> will shrink the width and height of the output video by half. <code>2</code> will double the width and height of the output video.</p> | <code>1</code> |
| speed | <code>optional</code> | number | <p>Specifies the speed to record at.</p><p>For example, <code>0.5</code> will slowdown the output video by 50%. <code>2</code> will double the speed of the output video.</p> | <code>1</code> |