Recorded last Thursday, demonstrates the latest build of Firefox OS running on a developer phone by Chinese manufacturer ZTE.
Visible in the demonstration are the open source operating system's dialing capabilities, contacts list, built-in , virtual keyboard, camera, photo gallery feature, and app for finding and downloading additional software.
Mozilla's video also demonstrates an app called Galactians2 by Space Monster Games running on top of the operating system.
Open Web Standards
For those who don't remember, Firefox OS began its life more than a year ago under the name "" which was officially this past July.