New answers tagged airplay
There are two ways to send content via AirPlay from your Mac to your Apple TV when it comes out of the box. The first is the Mirroring method, found, as you mentioned, in the Menu Bar on OS X and in the Control Centre on iOS. As far as the in-app method goes, the only app that supports that is iTunes. There should be an AirPlay icon at the top of the window ...
Try to reset both your Mac and the TV, that works for me.
Use QuickTime Player (which is pre-installed on OS X)
AirPlay uses the following ports: TCP 80 - http TCP 443 - https TCP/UDP 554 - rstp TCP 3689 - daap UDB 5353 - mDNS Data from https://support.apple.com/en-us/HT202944 - TCP and UDP ports used by Apple software products and TCP and UDP ports and protocols used by Apple TV Here's how to test ports and also an AirPort centric setup guide
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