Find the downloaded clipping software and open it. Click the Start Creation button. Select the video footage, and then click the Add to Project button. Slide the bottom function bar to the left, find the Zoom button, and then click. Set the scale to 9: 16, and then click the back button on the left.

If you are using Windows 10 operating system, you can also press and hold the "Ctrl" key to scroll the mouse wheel to adjust the screen zoom ratio, so that the video occupies the full screen.

Take the clip as an example to make the video full screen: Go to the video clip page in the clip and find the following ratio. Select the video scale at the bottom of the page and expand it with two fingers at the top to spread the video all over the screen. When the operation is complete, click Export. If the video is successfully exported, you can view it in the photo album.

First, open the clip application, click Start Create, select a video, and then click Add. Then click the proportion. Finally, click 9: 16 to set it to full screen.