Super simple. You can download an A-format factory-or-universal video converter software. Open the software on your computer, load the downloaded video and convert it into the format you want. It can be viewed on a mobile phone or a tablet, and generally can be converted into MP4, and the resolution can be adjusted before conversion. . . If you don't have a computer and want to transfer it on your mobile phone, there is similar transcoding software, but if the video is too big, it's no problem within 100M, and if it is too big, it will transfer very slowly. It is faster to operate on the computer.