Video enhancement script, supports all H5 video websites, such as: Bilibili, Douyin, Tencent Video, Youku, iQiyi, Xigua Video, YouTube, Weibo Video, Zhihu Video, Sohu Video, NetEase Open Course, Baidu network disk, Alibaba cloud disk, ted, instagram, twitter, etc. Full shortcut key control, support: double-speed playback/accelerated playback, video screenshots, picture-in-picture, full-screen web pages, adjusting brightness, saturation, contrast
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另外希望增加一个帮助功能，输入按键h或者？在播放器顶部显示快捷键列表。
希望增加一个旋转并缩放的功能。脚本自动获取视频播放器的父元素尺寸，当旋转角度为90、270时，自动计算缩放比例来增大画面并裁切（由于父元素宽高比不为1而造成的内接）黑边。当角度为180和0时，不进行缩放。