I've got a 2nd gen Apple TV and I cannot get Airplay to play videos (recorded in the phone) off my iPhone 6. I can connect fine, and I can see the phone mirrored, but no video will play (mirrored or not). Have tried regular video (which might be a problem because it's at 1080p/60 and my ATV only supports 720p?), but also slo-mo video, which should be 720p/30 and should be playable on the ATV.