Tools: Apple 13, iOS 16.2, photos.

1. Open the Photos application and click the video you want to edit.

2. Click the "Edit" button in the upper right corner, and the video will be in edit mode.

3. Click "Edit". Move the sliders on both sides of the video timeline to change the start time and stop time. To preview the trimmed video, tap the Play button.

4. Click Finish in the lower right corner, and then click Save Video or Save Video as a New Clip.

5. Finally, return to the photo album to view the cropped video. Note "Save Video" will save only the cropped version of the video. Save as New Clip not only keeps the original version, but also stores another trimmed version in the repository.