https://blog.wongcw.com/2018/10/04/camtasia-studio-v2018-0-4-build-3822-9-1-2-build-3011-%e5%ae%98%e7%bd%91%e6%ad%a3%e5%bc%8f%e7%89%88%e9%99%84%e6%b1%89%e5%8c%96%e8%a1%a5%e4%b8%81-%e5%b1%8f%e5%b9%95%e5%bd%95%e5%88%b6%e5%b7%a5%e5%85%b7/