YT Speed Change v1.0.5.3
This extension adds a video playback speed controller to the bottom right corner of the YouTube.
You can directly enter the playback speed value in the controller, or you can use the mouse wheel to control it intuitively. You can reset the playback speed with the touch of a button. You can set to 0.1x or 4x, which is not possible with the standard YouTube playback speed setting.
This extension is currently under development. Please send feedback and bug reports to GitHub.