How to record video after Apple's mobile phone is suspended?

The camera that comes with Apple's mobile phone can't be paused, and it can only be paused when using a "third-party camera" to shoot video.

iPhone 12

ios 15

Meitu Xiu Xiu 9.2.60

1, turn on the phone, and then click to open the camera software.

2. After entering the software interface, click the selfie below.

3. In the camera interface, click the video below to jump to the camera interface.

4, and then click on the bottom, click on the red button to start shooting video.

5. Then click the red button below to stop shooting video.