Implement a Picture-in-Picture (PiP) mode for videos(trailers). This would allow a user to "pop out" a small, floating, always-on-top window of specific media playing. Also please allow one to use it with a shortcut like Alt + F. (like F is for Fullscreen, Alt + F for PiP)
This feature can use either the Document Picture-in-Picture API since this is based on chrome or just custom PiP implementation to enable multitasking.