Mobile phones cannot directly record or make slow-motion videos. You can only install a watermark APP after the mobile phone shoots the video, and then adjust the playing time of the shot video to slow down the playing speed. You can follow the following steps.

The first step is to open the watermark APP, which can be downloaded from Baidu or the mobile app store.

Step 2: Go to the home page and select Video Variable Speed.

Step 3: Select a video that needs to be played slowly.

The fourth step, you can start to adjust the video double speed, and there are five times the speed to choose from.

Step 5: The slowest video selected here has a double speed of 0.5X, and then click Next in the upper right corner.

Step 6: Wait for video processing.

Step 7: Here, you can check the effect after the video is played slowly, and then click Save to Album.