UPDATED: -Added an aspect ratio mode as well as crop mode. You can toggle these on the fly with ctrl+alt+c! -More stability and more compatibility with players. Press ctrl+alt+c to toggle on the fly. Help me out on GIT! https://github.com/wltrsjames/Ultrawide-Video This extension enables the support for 21:9 monitors on YouTube, Netflix & HBO GO's full screen mode. It is great for wide aspect ratio videos, that have black bars at the top and bottom and don't scale correctly.