Walt Disney studios and media conglomerate Clear Channel said Monday they’re starting to advertise movies and other content over video-enabled portable players like the iPod, marking a growing trend of using the Internet for promotional purposes.

Media giant Disney and Clear Channel, which owns 1,200 radio stations in the United States, will become the first major media companies to deliver their promotional videos to the new iPods. Disney plans to offer full-screen, theater-quality video content from its upcoming release of fantasy film The Chronicles of Narnia directly to PCs and video-enabled iPods.