1. You can use the "Huisheng Huiying" APP for production. First, you need to open "Huisheng Huiying" on your mobile phone.

2. After opening, click the "New" button at the bottom of the interface.

3. In the pop-up options below, select "Apply Template".

4. After entering the interface, click "Select Video Template" in the second edit box.

5. Then in this interface, select your favorite playback template.

6. After returning to the editing interface, click on the picture under "Select the picture to make a video" in the interface.

7. Then select the photos to be included in the video in the album, and click the "Finish" button after selecting.

8. Click the "OK" button again.

9. In this way, you can turn photos into a slideshow video with background music.