Customize Plyr.io sdk for mobile app

Plyr.io is a simple html5 youtube and vimeo player. I want it to be customized for my mobile app. I want some custom control icons to be placed on top corner of the player and the 10sec seek option on either side of the play button in the middle of the player. Also I want the seek bar to be stretched to the width of the player and speed and quality controls below that as separate controls.

You can check plyr.io details here: https://plyr.io/