Enable hotkeys for HTML5 playback: video screenshot; enable/disable picture-in-picture; copy cached video; send any video to full screen or browser window size; fast forward, rewind, pause/play, volume, skip to next video, skip to previous or next frame, set playback speed. Video sites supported: YouTube, TED, Youku, QQ.com, bilibili, ixigua, iQiyi, support mainstream video sites in mainland China; Live broadcasts: Twitch, Douyu.com, YY.com, Huya.com. Custom sites can be added
< Feedback on HTML5 Video Playing Tools
用了Catsxp和Cent两个浏览器测试，都出现这样的状况。
你好，虎牙星秀看直播，
1、打开本脚本，会出现如图，自己打开这两项屏蔽。即使勾掉，刷新又自己勾选了。
关掉本脚本，勾掉这两项屏蔽前面的红勾，刷新，正常了，不会自动勾选这两项屏蔽。
2、上下方向键，没法调节音量