Glad I'm not the only one, this is exactly what I came here looking for. I am having major problems with Airplay and the new ATV4. From my phone, video/audio work, but as soon as the phone locks (either from timeout, or manually hitting the lock button), the video shuts off. From my Macbook, I get the icon in Youtube, but clicking it does nothing. I did one time get the screen to go black and it play audio only (when it should have been doing video), but that was it.