I recently installed a plug-in for Totem movie player. This allows the app to receive and play AirPlay-streamed video from iphone to totem player: http://www.omgubuntu.co.uk/2011/01/airplay-video-playback-comes-to-totem
Actually this works fine with youtube videos. But when it comes to other apps in iPhone (such as Digital TV App) the streaming does not work. In the app I can choose Totem Player, but Totem Player itself stays empty, i.e. nothing will be streamed.
As mentioned choosing Totem Player for youtube video works fine.
Do you guys have any idea what makes the difference that it works only for youtube?