记住上次使用的播放速度，并改造YouTube的速度调整滑杆，最高支持8倍速。
You are so smart. I'll add this when I can, but that won't be the case for a week or so. Stay tuned.
Hotkeys have been added all the way up to 8x speed in the new (v2.3.0) update. Thanks again for the amazing suggestion.
Could you add support for the keyboard shortcut going past 2x?