It makes your youtube video volume output at it's maximum as long as you have 100% on.
当前为
This script overwrites the default volume set (0.48) to 1. It's not the same as making your Video at 100% in your graphical interface, it makes the video even louder. (In most cases, if the video isn't at its maximum output in sound)
As long as the Video is at 100%, the default volume value with be changed to 1.
