LOS ANGELES — A company backed by investors including Will Smith and major record labels has launched a new Web site offering 10,000 free, high-definition music videos.

Universal Music Group saod Wednesday that it has joined EMI and Sony BMG in backing Santa Monica, Calif.-based PluggedIn.

The Web site features music videos from artists such as Gwen Stefani, Green Day, Coldplay and Norah Jones and is powered by a new media player that supports full-screen high-definition video.

PluggedIn also announced a partnership with Smith's production and management company Overbrook Entertainment.