https://blog.wongcw.com/2021/05/05/%e9%9b%bb%e8%a6%96%e9%81%b8%e8%b3%bc%e8%a7%a3%e6%83%91%ef%bc%9ahdmi-2-1%e7%9c%9f%e7%9a%84%e6%98%af%e5%89%9b%e9%9c%80%e5%97%8e%ef%bc%9f/