premiere亮度键抠图
对应英文菜单：luma key
https://www.jb51.net/softjc/616766.html
premiere怎样让视频画面逐渐放大
https://jingyan.baidu.com/article/0a52e3f4eb915fbf62ed72f7.html
premiere中时间重映射怎么用？
https://jingyan.baidu.com/article/48b558e3fe4b997f38c09ae1.html
Pr让视频画面跟音乐节奏鼓点走
https://jingyan.baidu.com/article/09ea3ede4dea20c0aede390e.html
https://m.bilibili.com/video/av29486147.html
跳轴 rgb分离
