1. Click to open file management.
2. Click Internal Storage.
3. In the internal storage interface, click Tencent.
4. Under the Tencent folder, click MicroMsg.
5. Find a long string folder, click to find the cached video in Finder, check the video, and click More/Rename.
6. Modify the video suffix to mp4 file, and the video in this video number will appear in the local photo album in mp4 format.