b站播放速度三倍

document.querySelector(‘video’).playbackRate = 3
如果不起作用换成火狐试试

https://blog.youkuaiyun.com/CC__Faker/article/details/106912580

https://blog.youkuaiyun.com/qq_42191914/article/details/104625117

B站不起作用

google 倍速 document.querySelector(‘video’).playbackRate =2.2;