1. First, open the Aauto Quicker app in your mobile phone and click the editing function.

2. Select the video file to edit, and then click the "Finish" button at the bottom.

3. Then click the material button at the bottom.

4. Select the function of importing stickers.

5. Select the Video tab, click the video to be added, and then click the Save button on the right.

6. This adds up the videos of the same frame.

7. You can resize the video by holding it down with two fingers to stretch or shrink it.

8. After resizing the video, you can click the Export button on the right, so that the video can be displayed in the same frame.