HBO No Go
This isn't just HBO Go, or even just third-party apps – first-party video playback on iOS will, depending on hidden flags from iTunes store purchases, arbitrarily disable video over AirPlay.<p>A friend and I found this out the hard way one afternoon when we decided to rent Ridley Scott's Alien, in anticipation of seeing Prometheus. He pulled up the store on his iPhone, found the movie, selected Rent: HD, and signed on to my wi-fi network, my Apple TV appearing on his iPhone without a hiccup. So far, pure Apple seamlessness – until he selected the AirPlay output. The audio played back over my speakers, but the video remained on the 3.5" screen.<p>Thinking resourcefully, I suggested he try AirPlay mirroring. This, at last, gave us the "fuck you, consumer" from the studio in explicit form: a message appeared on his phone saying the AirPlay display couldn't be trusted.<p>We both resolved never to use the iTunes store for movies again.