Iphone video conversion slow motion

1. Take Apple XR as an example, turn on the "camera" of iphone, as shown in the following figure:

2. Click "Slow Motion", as shown in the following figure:

Third, click on the red circle to shoot a slow-motion video. At first, it was normal speed, and then it became slow motion, as shown in the following figure:

4. When shooting a video, you can also click on the small white dot in the lower left corner to take a picture, stop after shooting and exit the camera, as shown in the following figure: