This extension allows to switch between desktop/TV versions of the YouTube platform
Allows users to easily switch on a currently watching video between the desktop and the TV interface from YouTube. - The badge indicates whether which YouTube version you are using. - Preserves currently watching videos between switches. New features will come soon. THIS IS AN ALPHA RELEASE. USE AT YOUR OWN RISK.
- (2017-12-17) Marcin L: Why resolution so low 480p?.