I’ve just bought an Apple TV 4K and have been trying to display photos from my iMac on the TV. Previously I’ve done that by copying them onto a USB stick and plugging it into a DVD player.
I’ve bought Take Control of Apple TV (of course) and followed the advice there for showing photos, but haven’t found a method that works for me. I think the problem stems from not using Apple’s iPhoto/Photo system to organise my photos - I download all photos to the iMac (MacOS 10.14 Mojave) then arrange them in folders in the Finder.
The nearest I’ve come to success is to turn on Home Sharing in iTunes and select the folder of photos I want to display. This works except that the Apple TV displays the photos not in my carefully organised sequence but in whatever order the Apple system chooses.
Any ideas, please? Or am I stuck with the clunky but functional USB stick method?