How does Apple's mobile phone turn hdr video into normal?

The steps to turn the captured hdr video into normal are as follows:

Mobile phone: iphone 13

System: iOS 13

Software: Clip 8.2.0

1. Enter the cut, click the Start Creation option above, and upload the video by viewing the photo album.

2. To complete the video upload, click the frame rate option in the upper right corner.

3. Enter the frame rate interface and turn off the HDR function.

4. After turning off HDR, click the resolution above to check 720p.

5. After checking the resolution, you can restore the video to the normal state, and click the export option in the upper right corner to save it in the photo album.