https://blog.wongcw.com/2021/04/27/%e5%9b%a022%e5%b9%b4%e6%9c%aa%e6%ad%b8%e9%82%84vhs%e9%8c%84%e5%83%8f%e5%b8%b6%e7%be%8e%e5%9c%8b%e4%b8%80%e5%a5%b3%e5%ad%90%e6%88%90%e7%82%ba%e9%87%8d%e7%bd%aa%e9%80%9a%e7%b7%9d%e7%8a%af/