1. First, open the security center (or mobile phone housekeeper) software on your mobile phone, and click the garbage cleaning icon on the homepage of the opened software.

2. Then, after cleaning up, click the icon dedicated to WeChat.

3. Then, clean up all the rubbish in the WeChat special cleaning.

4. After that, an interface as shown below will appear. Click the icon of the video in the interface.

5. finally, in the depth cleaning interface, select the video to be saved in the mobile phone photo album, and then click the export to photo album button at the bottom.