On both my iPad and iPhone when I select Airplay and the device (Apple TV Living Room) and start the video I want to see, Airplay reverts back to the iPad or iPhone as viewing device and won't play on Apple TV device I've selected.
iPad Air, iOS 9.2.1
Try the following steps, check whether things are working after each step where appropriate, before trying the next.
If you are still having problems, the following article(s) may help you.
Troubleshooting Wi-Fi networks and connections
Wifi Diagnostic Software (for Mac users)
You may also find some help on this page, where I’ve collected some of the more unusual solutions to network issues.
When making adjustments to your network for better optimisation, you may find some of the points mentioned on this page helpful.
I have had the same issue for months and was getting increasing frustrated. I was messing about the settings on Apple TV and as soon as I switched conference room display to Off, my screen mirroring came back on. I don't understand why this would affect it but it worked.
Since I update iOS and Os el capitan yesterday, airplay from all my devices doesn't work anymore. @jillG: witch menu is that: conference room? on apple tv?
Can anybody tell me why it doesn't work anymore. Network is the same etc. all mr. Winston Churchill wrote is good. It has something to do with the latest updates i think. Anyway, I've already had problems with i movie theater on apple tv (cannot handle more than 50 movies???!) so i'm getting a little disapointing in Apple this way. They aren't the always works company anymore!! By the way, i have an apple TV 4th generation
Air Play doesn't stay connected to selected device, but reverts to source device
