The "Join the quest" campaign, created by Emuse and Carat, marks the first interactive ad campaign to launch on BT Vision.
It promotes the 'Prince Caspian' film, based on the second published novel in CS Lewis' 'Chronicles of Narnia' children's fantasy series, which hits cinemas in the UK on June 26.
The campaign features an extended movie trailer and a competition giving viewers the chance to win an expenses-paid family holiday to New Zealand, where parts of the movie were shot.
Viewers can watch the trailer, enter the competition and play a video game via the red button on their remote control.
Emuse has also created a bespoke ad campaign on the Sky platform but the BT Vision version gives the viewer access to video-on-demand, where the extended trailer starts each time the campaign is viewed, and gives Disney a measurable connection with viewers.
Patrick Rainsford, CEO of Emuse, said: "Our deals with BT Vision have seen us facilitate advertising and sponsorship on the platform and build a pipeline of applications including enhancements to the OnVision service, a new BT Vision sports service, a lifestyle magazine service and a gaming portal.
"Now Emuse has opened up a platform which offers more sophisticated opportunities for advertisers and we are looking forward to creating many more."
Antony Carbonari, BT Vision's director of interactive and commercial media, said: "True interactivity powered by the fast always-on broadband connection combined with the Microsoft Mediaroom TV browser will offer so many compelling possibilities for advertisers and content providers."