YouTube is rolling out a new playback slider with tools to improve the video viewing experience.The new slider replaces the old playback speed option and allows users to set the playback speed to 0.05 seconds.The old playback options are still available, along with new options for 0.25 seconds, 0.5 seconds, and 0.75 seconds.The new feature is initially available for Android and iOS devices, with no information on when it will be introduced for the desktop version.